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Naval Vessel Register
http://www.nvr.navy.mil/nvrships/details/SSN674.htm
SSN 674 fact sheet.
NavSource Online
http://www.navsource.org/archives/08/08674.htm
USS Trepang specifications and photos.
SSN 674 - USS TREPANG
http://www.geocities.com/Pentagon/Barracks/1094/SSN674USSTREPANG.html
Photos of SSN 674.
SubNet
http://www.subnet.com/FLEET/ssn674.htm
USS Trepang specifications and history.