Marine Craft History and  
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The Shiplist
DiscoverSea Museum Delaware
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Northern Maritime Research
Turks & Cacos Nat. Museum
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Worldwide shipwreck database
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US Naval Ship History
 
Dept. Navy Underwater Archaeology
 
 
PT boat page
 
 
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Minnesota's Ship History
 
 
USCG research guide
 
 
Dictionary of US fighting ships