Ships numbered 177 include:

Surface vessels[edit]

• USNS Shearwater (T-AG-177), a WWII U.S. Navy Shearwater-class auxiliary
• USS Cimarron (AO-177), a Cold War U.S. Navy Cimarron-class fleet oiler
• USS Kingsbury (APA-177), a WWII U.S. Navy Haskell-class attack transport
• USS Europa (AP-177), a trans-Atlantic oceanliner requisitioned as a WWII U.S. Navy troopship
• Soviet minesweeper BT-177, a Cold War Soviet minesweeper
• USS O'Bannon (DD-177), a WWI U.S. Navy Wicker-class destroyer
• USS Reybold (DE-177), a WWII U.S. Navy Cannon-class destroyer escort
• JDS Atago (DDG-177), a Japanese Maritime Self-Defense Force guided missile destroyer
• HMS Faithful (F177), a WWII British Royal Navy repair ship
• HMCS Winnipeg (FSE 177), a WWII Canadian minesweeper
• USS Nightingale (IX-177), a WWII U.S. Navy minesweeper
• HMCS Dunvegan (K177), a WWII Canadian corvette
• USS LST-177, a WWII U.S. Navy tank landing ship
• FV Commandant Bultinck (O-177), a Belgian trawler
• NNS Badagry (P177), a Nigerian navy patrol boat
• USS Davenport (PG-177), an end-of-WWII U.S. Navy Tacoma-class frigate
• USS Emerald (SP-177), a WWI U.S. Navy armed yacht

Submarines[edit]

• Japanese submarine I-177, a WWII Japanese Kaidar-class cruiser submarine
• USS Pickerel (SS-177), an interwar U.S. Navy Porpoise-class submarine
• German submarine U-177, a WWII German Kriegsmarine submarine