{"id":11453,"date":"2020-04-08T00:04:03","date_gmt":"2020-04-08T04:04:03","guid":{"rendered":"https:\/\/www.marinersmuseum.org\/?p=11453"},"modified":"2025-03-27T07:45:48","modified_gmt":"2025-03-27T11:45:48","slug":"on-the-right-track","status":"publish","type":"post","link":"https:\/\/www.marinersmuseum.org\/2020\/04\/on-the-right-track\/","title":{"rendered":"The port gun carriage on the right track"},"content":{"rendered":"\n<p>It has been too long since we\u2019ve given an update on the conservation of <em>Monitor<\/em>\u2019s port gun carriage. So long in fact, that the conservation of its 250-ish components are now complete!!!<\/p>\n\n\n\n<p>Looking back and reflecting on the many steps of this (large) object\u2019s treatment, I really love that it has benefited from all of the research and discoveries done in the lab over the past 10 years. It is, after all, the largest <em>Monitor<\/em> object completed thus far and we were experimenting a lot along the way to provide the best treatment possible with current knowledge. We also knew that the work would benefit not only \u201cour little <em>Monitor<\/em>\u201d but the field at large. And we learned so much!<\/p>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_10696\"><a href=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1362\" height=\"562\" data-attachment-id=\"11454\" data-permalink=\"https:\/\/www.marinersmuseum.org\/2020\/04\/on-the-right-track\/figure-1-jpg\/\" data-orig-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-1.jpg\" data-orig-size=\"1362,562\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Figure-1.jpg\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-1-300x124.jpg\" data-large-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-1-1024x423.jpg\" class=\"wp-image-11454\" src=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-1.jpg\" alt=\"\" srcset=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-1.jpg 1362w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-1-300x124.jpg 300w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-1-1024x423.jpg 1024w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-1-768x317.jpg 768w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-1-805x332.jpg 805w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-1-620x256.jpg 620w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-1-386x159.jpg 386w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-1-281x116.jpg 281w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-1-180x74.jpg 180w\" sizes=\"auto, (max-width: 1362px) 100vw, 1362px\" \/><\/a><figcaption>Detailed view of the interior of the turret showing one of the Dahlgren guns on its carriage.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_10697\"><a href=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-2.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1998\" height=\"1380\" data-attachment-id=\"11455\" data-permalink=\"https:\/\/www.marinersmuseum.org\/2020\/04\/on-the-right-track\/figure-2-jpg\/\" data-orig-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-2.jpg\" data-orig-size=\"1998,1380\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Figure-2.jpg\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-2-300x207.jpg\" data-large-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-2-1024x707.jpg\" class=\"wp-image-11455\" src=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-2.jpg\" alt=\"\" srcset=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-2.jpg 1998w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-2-300x207.jpg 300w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-2-1024x707.jpg 1024w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-2-768x530.jpg 768w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-2-1536x1061.jpg 1536w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-2-805x556.jpg 805w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-2-620x428.jpg 620w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-2-386x267.jpg 386w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-2-281x194.jpg 281w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-2-180x124.jpg 180w\" sizes=\"auto, (max-width: 1998px) 100vw, 1998px\" \/><\/a><figcaption>Sketch of a cut-away view of the gun carriage showing the braking mechanism. Courtesy of NOAA, USS <em>Monitor <\/em>Collection.<\/figcaption><\/figure>\n\n\n\n<p><strong>In terms of conservation, the complexity of this artifact was multifaceted:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>It is made of 3 different materials (iron, copper alloy and wood), all requiring different types of treatment.<\/li><li>Like all USS <em>Monitor<\/em> artifacts, having spent almost 150 years at the bottom of the ocean, the carriage needed to be desalinated. Since ocean salts had many years to enter the materials, reversing the process was a slow procedure. Failing to do so could lead to the formation of detrimental corrosion in the future.<\/li><li>In order to address the first two points, we wanted to fully disassemble the carriage. This would enable us to provide the most ideal conservation treatment for different materials and expose more metal surfaces for better desalination.<\/li><li>However, full disassembly proved impossible due to 2 sets of white oak planking which are held together by large iron rivets that could not be taken apart. As a result, this made them wooden\/iron composite objects of their own. Research and extensive testing had to be set to find an appropriate treatment to conserve these two materials together\u2026 which intrinsically require opposite types of care.<\/li><li>And last but not least, the carriage is approximately the size of a compact car and weighs about a ton (<em>literally!<\/em>). Working on the object required draining its tank, rinsing it, using the overhead crane to lift the object, and then moving it back and refilling the tank at the end of the day (not something you start on a Friday afternoon!).<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_10698\"><a href=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-3.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1264\" height=\"514\" data-attachment-id=\"11456\" data-permalink=\"https:\/\/www.marinersmuseum.org\/2020\/04\/on-the-right-track\/figure-3-jpg\/\" data-orig-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-3.jpg\" data-orig-size=\"1264,514\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Figure-3.jpg\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-3-300x122.jpg\" data-large-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-3-1024x416.jpg\" class=\"wp-image-11456\" src=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-3.jpg\" alt=\"\" srcset=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-3.jpg 1264w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-3-300x122.jpg 300w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-3-1024x416.jpg 1024w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-3-768x312.jpg 768w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-3-805x327.jpg 805w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-3-620x252.jpg 620w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-3-386x157.jpg 386w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-3-281x114.jpg 281w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-3-180x73.jpg 180w\" sizes=\"auto, (max-width: 1264px) 100vw, 1264px\" \/><\/a><figcaption>Draft drawings of the carriage with areas shaded in green composed of copper alloys, blue is wrought iron, and red is white oak.<\/figcaption><\/figure>\n\n\n\n<p>While it took approximately 2 staff members about a year to take the object apart as far as ethically possible (without damaging it), the metallic parts were in desalination for approximately 8 years afterwards (told you it was slow!).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\" id=\"attachment_10699\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1707\" data-attachment-id=\"15401\" data-permalink=\"https:\/\/www.marinersmuseum.org\/figure-4-scaled\/\" data-orig-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Figure-4-scaled-1.jpg\" data-orig-size=\"2560,1707\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Figure-4-scaled\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Figure-4-scaled-1-300x200.jpg\" data-large-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Figure-4-scaled-1-1024x683.jpg\" src=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Figure-4-scaled-1.jpg\" alt=\"\" class=\"wp-image-15401\" srcset=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Figure-4-scaled-1.jpg 2560w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Figure-4-scaled-1-300x200.jpg 300w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Figure-4-scaled-1-1024x683.jpg 1024w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Figure-4-scaled-1-768x512.jpg 768w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Figure-4-scaled-1-1536x1024.jpg 1536w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Figure-4-scaled-1-2048x1366.jpg 2048w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Figure-4-scaled-1-805x537.jpg 805w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Figure-4-scaled-1-620x413.jpg 620w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Figure-4-scaled-1-386x257.jpg 386w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Figure-4-scaled-1-281x187.jpg 281w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Figure-4-scaled-1-180x120.jpg 180w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><figcaption>This picture may not look like much, but in order to get there and free the outer wrought iron plates of the carriage, the following steps had to take place: First, the iron axle pins used to hold the wheels in place were removed, followed by the wheels; next, copper alloy components along the top and front of the carriage\u2019s sides were removed; and lastly 80 wrought iron blots (40 per side) were manually removed.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_10700\"><a href=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-5.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"933\" height=\"1400\" data-attachment-id=\"11458\" data-permalink=\"https:\/\/www.marinersmuseum.org\/2020\/04\/on-the-right-track\/figure-5-jpg\/\" data-orig-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-5.jpg\" data-orig-size=\"933,1400\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;14&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;Canon EOS 30D&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1281966943&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;17&quot;,&quot;iso&quot;:&quot;400&quot;,&quot;shutter_speed&quot;:&quot;0.6&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Figure-5.jpg\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-5-200x300.jpg\" data-large-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-5-682x1024.jpg\" class=\"wp-image-11458\" src=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-5.jpg\" alt=\"\" srcset=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-5.jpg 933w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-5-200x300.jpg 200w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-5-682x1024.jpg 682w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-5-768x1152.jpg 768w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-5-805x1208.jpg 805w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-5-620x930.jpg 620w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-5-386x579.jpg 386w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-5-281x422.jpg 281w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-5-180x270.jpg 180w\" sizes=\"auto, (max-width: 933px) 100vw, 933px\" \/><\/a><figcaption>Former technician and artifact handler Gary Paden working on removing a set of white oak planking from the side of the port gun carriage.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_10701\"><a href=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-6.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1400\" height=\"788\" data-attachment-id=\"11459\" data-permalink=\"https:\/\/www.marinersmuseum.org\/2020\/04\/on-the-right-track\/figure-6-jpg\/\" data-orig-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-6.jpg\" data-orig-size=\"1400,788\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;1.7&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;SM-G930T&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1562664360&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;4.2&quot;,&quot;iso&quot;:&quot;125&quot;,&quot;shutter_speed&quot;:&quot;0.041666666666667&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Figure-6.jpg\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-6-300x169.jpg\" data-large-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-6-1024x576.jpg\" class=\"wp-image-11459\" src=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-6.jpg\" alt=\"\" srcset=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-6.jpg 1400w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-6-300x169.jpg 300w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-6-1024x576.jpg 1024w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-6-768x432.jpg 768w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-6-805x453.jpg 805w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-6-620x349.jpg 620w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-6-386x217.jpg 386w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-6-281x158.jpg 281w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-6-180x101.jpg 180w\" sizes=\"auto, (max-width: 1400px) 100vw, 1400px\" \/><\/a><figcaption>Desalination bath with electrolysis set up for optimal salts extraction.<\/figcaption><\/figure>\n\n\n\n<p>Meanwhile in the lab, Will was having great success testing dry ice blasting to clean wrought iron surfaces. And, experience showed that the metal needed 3 passes of dry ice to be appropriately cleaned. Between each pass, artifacts were returned to desalination, where due to being cleaner, salts could be extracted more readily.<\/p>\n\n\n\n<p>As a result, even after having already spent 5 years in a desalination bath, we decided to perform dry ice blasting on the main frame of the carriage and associated components, once a year, for the last 3 years of desalination treatment. Wrought iron has a unique way of corroding with pockets of impurities degrading first which make a perfect home for salts to accumulate. Cleaning the objects as thoroughly as possible is in their best interest!<\/p>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_10702\"><a href=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-7.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1400\" height=\"1495\" data-attachment-id=\"11460\" data-permalink=\"https:\/\/www.marinersmuseum.org\/2020\/04\/on-the-right-track\/figure-7-jpg\/\" data-orig-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-7.jpg\" data-orig-size=\"1400,1495\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;1.9&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;SAMSUNG-SM-G920A&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1482233345&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;4.3&quot;,&quot;iso&quot;:&quot;200&quot;,&quot;shutter_speed&quot;:&quot;0.066666666666667&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Figure-7.jpg\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-7-281x300.jpg\" data-large-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-7-959x1024.jpg\" class=\"wp-image-11460\" src=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-7.jpg\" alt=\"\" srcset=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-7.jpg 1400w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-7-281x300.jpg 281w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-7-959x1024.jpg 959w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-7-768x820.jpg 768w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-7-805x860.jpg 805w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-7-620x662.jpg 620w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-7-386x412.jpg 386w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-7-180x192.jpg 180w\" sizes=\"auto, (max-width: 1400px) 100vw, 1400px\" \/><\/a><figcaption>Under side of the port gun carriage before (left) and after (right) first pass of dry ice blasting.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_10703\"><a href=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-8.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"1204\" data-attachment-id=\"11461\" data-permalink=\"https:\/\/www.marinersmuseum.org\/2020\/04\/on-the-right-track\/figure-8-jpg\/\" data-orig-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-8.jpg\" data-orig-size=\"1000,1204\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;2.2&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;iPhone 6&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1563968905&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;4.15&quot;,&quot;iso&quot;:&quot;250&quot;,&quot;shutter_speed&quot;:&quot;0.05&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Figure-8.jpg\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-8-249x300.jpg\" data-large-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-8-850x1024.jpg\" class=\"wp-image-11461\" src=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-8.jpg\" alt=\"\" srcset=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-8.jpg 1000w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-8-249x300.jpg 249w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-8-850x1024.jpg 850w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-8-768x925.jpg 768w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-8-805x969.jpg 805w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-8-620x746.jpg 620w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-8-386x465.jpg 386w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-8-281x338.jpg 281w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-8-180x217.jpg 180w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/a><figcaption>Last pass of dry ice blasting on the main frame of the carriage.<\/figcaption><\/figure>\n\n\n\n<p>At this time too, Laurie found the right parameters for us to clean copper alloys with dry ice. This allowed us to use this technique to complete the treatments of the copper alloy parts.<\/p>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_10704\"><a href=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-9.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1045\" height=\"905\" data-attachment-id=\"11462\" data-permalink=\"https:\/\/www.marinersmuseum.org\/2020\/04\/on-the-right-track\/figure-9-jpg\/\" data-orig-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-9.jpg\" data-orig-size=\"1045,905\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;4&quot;,&quot;credit&quot;:&quot;unknown&quot;,&quot;camera&quot;:&quot;Canon EOS 30D&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1501082235&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;19&quot;,&quot;iso&quot;:&quot;400&quot;,&quot;shutter_speed&quot;:&quot;0.016666666666667&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Figure-9.jpg\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-9-300x260.jpg\" data-large-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-9-1024x887.jpg\" class=\"wp-image-11462\" src=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-9.jpg\" alt=\"\" srcset=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-9.jpg 1045w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-9-300x260.jpg 300w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-9-1024x887.jpg 1024w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-9-768x665.jpg 768w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-9-805x697.jpg 805w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-9-620x537.jpg 620w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-9-386x334.jpg 386w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-9-281x243.jpg 281w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-9-180x156.jpg 180w\" sizes=\"auto, (max-width: 1045px) 100vw, 1045px\" \/><\/a><figcaption>Dry ice blasting one of the carriage wheels. Notice the nozzle difference between this picture and the previous one. Copper alloys are much softer than irons and require less ice, lower velocity and more precision, hence the use of a smaller nozzle.<\/figcaption><\/figure>\n\n\n\n<p>In the meantime, an appropriate solution was found to treat our wood\/iron composites by adding a corrosion inhibitor to the bulking bath of the wood. Now the reason why we need to bulk the waterlogged wood is because its shape is mostly maintained by water molecules since the wooden cells are degraded. So if we dry, i.e. remove the water molecule from the wood, it will shrink and twist. And the reason why we had to add a corrosion inhibitor to the bath is because this bulking solution has a pH too low for iron, which would corrode if not protected. In any event\u2026 eventually, we had what we needed! Kate and I even pushed the study to make sure this corrosion inhibitor was not harmful to the wood (no discoloration or added degradation, click <a href=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2022\/09\/Sangouard-and-Sullivan-ICOMCC-poster-final.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">here<\/a> if you would like to know more).<\/p>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_10707\"><a href=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"2448\" height=\"1402\" data-attachment-id=\"11463\" data-permalink=\"https:\/\/www.marinersmuseum.org\/2020\/04\/on-the-right-track\/figure-10-jpg\/\" data-orig-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10.jpg\" data-orig-size=\"2448,1402\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Figure-10.jpg\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10-300x172.jpg\" data-large-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10-1024x586.jpg\" class=\"wp-image-11463\" src=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10.jpg\" alt=\"\" srcset=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10.jpg 2448w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10-300x172.jpg 300w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10-1024x586.jpg 1024w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10-768x440.jpg 768w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10-1536x880.jpg 1536w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10-2048x1173.jpg 2048w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10-805x461.jpg 805w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10-620x355.jpg 620w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10-386x221.jpg 386w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10-281x161.jpg 281w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-10-180x103.jpg 180w\" sizes=\"auto, (max-width: 2448px) 100vw, 2448px\" \/><\/a><figcaption>Former conservator, Kate Sullivan, and I cleaning one of the white oak\/wrought iron composites with dental ultrasonic scaler. Cleaning an organic object thoroughly helps the bulking process by giving the solution better access to the wooden cells.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_10708\"><a href=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-11.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1406\" height=\"604\" data-attachment-id=\"11464\" data-permalink=\"https:\/\/www.marinersmuseum.org\/2020\/04\/on-the-right-track\/figure-11-jpg\/\" data-orig-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-11.jpg\" data-orig-size=\"1406,604\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Figure-11.jpg\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-11-300x129.jpg\" data-large-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-11-1024x440.jpg\" class=\"wp-image-11464\" src=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-11.jpg\" alt=\"\" srcset=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-11.jpg 1406w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-11-300x129.jpg 300w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-11-1024x440.jpg 1024w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-11-768x330.jpg 768w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-11-805x346.jpg 805w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-11-620x266.jpg 620w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-11-386x166.jpg 386w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-11-281x121.jpg 281w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-11-180x77.jpg 180w\" sizes=\"auto, (max-width: 1406px) 100vw, 1406px\" \/><\/a><figcaption>The wooden sides consist of several layers of oak planks held together by vertical bolts. This image is composed of x-rays of the inboard wooden side of the port gun carriage, overlaid over a schematic drawing.<\/figcaption><\/figure>\n\n\n\n<p>So after many years of cleaning, disassembling, successes and step backs, 2019 felt like time flew by as we dried the wooden\/iron sides and the main iron components. The latter were also coated for added protection from environmental variations and they look phenomenal! We were recently in the process of prepping crates for storage of the many parts until an exhibit plan can be implemented and will get back to it as soon as possible.<\/p>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_10709\"><a href=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-12.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"900\" data-attachment-id=\"11465\" data-permalink=\"https:\/\/www.marinersmuseum.org\/2020\/04\/on-the-right-track\/figure-12-jpg\/\" data-orig-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-12.jpg\" data-orig-size=\"1200,900\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Figure-12.jpg\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-12-300x225.jpg\" data-large-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-12-1024x768.jpg\" class=\"wp-image-11465\" src=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-12.jpg\" alt=\"\" srcset=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-12.jpg 1200w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-12-300x225.jpg 300w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-12-1024x768.jpg 1024w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-12-768x576.jpg 768w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-12-805x604.jpg 805w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-12-620x465.jpg 620w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-12-386x290.jpg 386w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-12-281x211.jpg 281w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-12-180x135.jpg 180w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><figcaption>Main frame of the port gun carriage leaving the wet lab for the first time since it was recovered from the bottom of the ocean.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_10710\"><a href=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-13.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1400\" height=\"788\" data-attachment-id=\"11466\" data-permalink=\"https:\/\/www.marinersmuseum.org\/2020\/04\/on-the-right-track\/figure-13-jpg\/\" data-orig-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-13.jpg\" data-orig-size=\"1400,788\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Figure-13.jpg\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-13-300x169.jpg\" data-large-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-13-1024x576.jpg\" class=\"wp-image-11466\" src=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-13.jpg\" alt=\"\" srcset=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-13.jpg 1400w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-13-300x169.jpg 300w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-13-1024x576.jpg 1024w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-13-768x432.jpg 768w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-13-805x453.jpg 805w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-13-620x349.jpg 620w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-13-386x217.jpg 386w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-13-281x158.jpg 281w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-13-180x101.jpg 180w\" sizes=\"auto, (max-width: 1400px) 100vw, 1400px\" \/><\/a><figcaption>Large wrought iron components of the carriage dried and ready to be coated.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_10711\"><a href=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-14.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1400\" height=\"788\" data-attachment-id=\"11467\" data-permalink=\"https:\/\/www.marinersmuseum.org\/2020\/04\/on-the-right-track\/figure-14-jpg\/\" data-orig-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-14.jpg\" data-orig-size=\"1400,788\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;1.7&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;SM-G930T&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1571649050&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;4.2&quot;,&quot;iso&quot;:&quot;200&quot;,&quot;shutter_speed&quot;:&quot;0.041666666666667&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Figure-14.jpg\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-14-300x169.jpg\" data-large-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-14-1024x576.jpg\" class=\"wp-image-11467\" src=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-14.jpg\" alt=\"\" srcset=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-14.jpg 1400w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-14-300x169.jpg 300w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-14-1024x576.jpg 1024w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-14-768x432.jpg 768w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-14-805x453.jpg 805w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-14-620x349.jpg 620w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-14-386x217.jpg 386w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-14-281x158.jpg 281w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-14-180x101.jpg 180w\" sizes=\"auto, (max-width: 1400px) 100vw, 1400px\" \/><\/a><figcaption>Creating an artificial patina at the surface of the carriage to protect it from possible oxidation.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\" id=\"attachment_10712\"><a href=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-15.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1400\" height=\"788\" data-attachment-id=\"11468\" data-permalink=\"https:\/\/www.marinersmuseum.org\/2020\/04\/on-the-right-track\/figure-15-jpg\/\" data-orig-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-15.jpg\" data-orig-size=\"1400,788\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"Figure-15.jpg\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-15-300x169.jpg\" data-large-file=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-15-1024x576.jpg\" class=\"wp-image-11468\" src=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-15.jpg\" alt=\"\" srcset=\"https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-15.jpg 1400w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-15-300x169.jpg 300w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-15-1024x576.jpg 1024w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-15-768x432.jpg 768w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-15-805x453.jpg 805w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-15-620x349.jpg 620w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-15-386x217.jpg 386w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-15-281x158.jpg 281w, https:\/\/www.marinersmuseum.org\/wp-content\/uploads\/2020\/04\/Figure-15-180x101.jpg 180w\" sizes=\"auto, (max-width: 1400px) 100vw, 1400px\" \/><\/a><figcaption>Main frame of the carriage ready for final coating in our ventilated room to seal its surface and protect it further from the elements.<\/figcaption><\/figure>\n\n\n\n<p>It has been an adventure and we are well armed now to tackle the second gun carriage as well as many other <em>Monitor<\/em> assemblies.<\/p>\n\n\n\n<p>Stay home and healthy everyone! We\u2019re looking forward to seeing you all again once this storm has passed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>It has been too long since we\u2019ve given an update on the conservation of Monitor\u2019s port gun carriage. So long in fact, that the conservation of its 250-ish components are now complete!!! Looking back and reflecting on the many steps of this (large) object\u2019s treatment, I really love that it has benefited from all of [&hellip;]<\/p>\n","protected":false},"author":13,"featured_media":11461,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"byline":{"profiles":[{"type":"byline_id","atts":{"term_id":130,"post_id":8374}}]},"jetpack_post_was_ever_published":false,"ep_exclude_from_search":false,"mariners_open_graph_description":"","mariners_open_graph_image":0,"mariners_open_graph_title":"","mariners_featured_image_focal_point":{"x":0.5,"y":0.5},"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[18,19],"prominence":[],"audience_motivation":[],"byline":[130],"class_list":["post-11453","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-conservation","tag-uss-monitor"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v26.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>The port gun carriage on the right track - The Mariners&#039; Museum and Park<\/title>\n<meta name=\"description\" content=\"It has been too long since we\u2019ve given an update on the conservation of Monitor\u2019s port gun carriage. 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