Gun carriages for Steamships and Gunboats proposed by Commander Marshall<br><p>No scale.  Plan showing two elevations illustrating the gun carriage braced and at full recoil, using a method proposed for Steamships and Gunboats by Commander J. Marshall.  The plan is annotated with an explanation for both elevations.<br></p>
carriage, gun
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Unknown author<span style="display: none;">Unknown author</span></div>
Dated- 4 December 1828
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