Rainier-class harbor tug

Rainer assisting USNS Richard E. Byrd at Naval Magazine Indian Island
Class overview
Builders	Dakota Creek Industries, Anacortes, Washington
Operators	United States Navy
Preceded by	Valiant-class harbor tug
Built	2019–2022
In commission	2020–present
Planned	6
Completed	6
Active	6
General characteristics
Type	Tug boat
Length	27.42 m (90 ft 0 in)[1]
Beam	11.65 m (38 ft 3 in)[1]
Draught	4.88 m (16 ft 0 in)[1]
Depth	5.00 m (16 ft 5 in)[1]
Propulsion	1 × CAT 3512E main engines with Schottel 1012 Z-Drives[1]
Speed	12 knots (22 km/h; 14 mph)[1]
Complement	6

The Rainier class is a class of tug boats built for the United States Navy. They are harbor tugs, whose missions include assisting ships in mooring and navigating in narrow waterways, towing ships and barges, and firefighting. They are designed to work with all Navy ships from carriers to barges to submarines. The class includes six tugs, all of which were launched in 2020 and 2021. Five of the tugs are assigned to Navy Region Northwest and one, YT-809 Agamenticus, to the Portsmouth Naval Shipyard.