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NavSource Online: Service Ship Photo Archive
Valiant (Z-TECH 4500) Class District Harbor Tug:
Built by Martinac Shipbuilding Corp, Tacoma, WA (YN 250)
Laid down, date unknown
Launched, 10 July 2010
Delivered, 28 September 2010
Placed in service as Defiant (YT-804), 22 October 2010
Displacement 460 tons (lt) 590 tons (fl)
Beam 38' 3"
Draft 12' 5"
Depth 16' 5"
Speed 12.4 kts (trial)
Armament two .50 cal machine guns
two Caterpiller CAT 3512C, main engines, each rated 1,800 bhp, each driving a Schottel Model SRP 1012 steering/propulsion Z-Drive unit, with two fixed pitch propellers, providing 42 t. (92,500 lb) bollard pull ahead, 45 t (99,205 lb) astern
Electrical power is delivered by a pair of R.A. Mitchell Co. Diesel generator sets with a John Deere 6068SFM75 prime mover, each rated at 130Kw
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||Defiant (YT-804) underway near her builders yard at Tacoma, WA., date unknown.
||Defiant (YT-804) underway in Rich Passage, returning to Bremerton, WA after escorting USS John C. Stennis (CVN-74).
Photo by "Trappist the Monk" from MV Kaleetan, 25 June 2012
||Defiant (YT-804) assisting John C. Stennis (CVN-74) at Bremerton, WA, 08 June 2015.
||Defiant (YT-804) berthed at Naval Magazine Indian River, Washington on 09 August 2015
||Photo by Peter M. Leenhouts
||Three views of Defiant (YT-804) operating off Puget Sound Naval Shipyard, 27 May 2017. Ships in background are Nimitz (CVN-68) and USNS Benevidez (T-AKR-306)
||Photos by Ray F. Lonaker Jr.
||Defiant (YT-804) assisting USNS Fisher (T-AKR-301) shift berths at Puget Sound Naval Shipyard, 24 June 2017.
||Photo by Ray F. Longaker Jr.
There is no DANFS history for Defiant (YT-804) available at NavSource
Additional Resources and Web Sites of Interest
National Association of Fleet Tug Sailors
"New Navy tugs have the finesse, power for a wide range of duties", by Brian Gauvin Professional Mariner, July 2, 2012
Last Updated 31 December 2017
This page was created by Gary P. Priolo and is maintained by David L. Wright|