File:Philadelphia naval shipyard drydock plan 1848.jpg
Philadelphia naval shipyard drydock plan 1848.jpg
Gatoclass uploaded "File:Philadelphia naval shipyard drydock plan 1848.jpg" {{Information |Description ={{en|1=Plan of the new drydock facility for the Philadelphia naval shipyard, 1848. The plans, submitted by a Philadephian firm, Dakin & Moody, incorporated a large sectional floating dock integrated with a stone basin and...
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