Trillium

The Mark 28 torpedo was a submarine-launched, acoustic homing torpedo designed by Westinghouse Electric in 1944 for the United States Navy. The torpedo used all-electric controls. Service use of the Mark 28 ended after the introduction of the Mark 37 torpedo.^[1]

References

U.S. Navy torpedoes
Pre-World War II	Howell Mark 1 torpedo Whitehead Mark 1 torpedo Whitehead Mark 1B torpedo Whitehead Mark 2 torpedo Whitehead Mark 2C torpedo Whitehead Mark 3 torpedo Bliss-Leavitt Mark 1 torpedo Bliss-Leavitt Mark 2 torpedo Bliss-Leavitt Mark 3 torpedo Bliss-Leavitt Mark 4 torpedo Whitehead Mark 5 torpedo Bliss-Leavitt Mark 6 torpedo Bliss-Leavitt Mark 7 torpedo Short Mark 7 torpedo Bliss–Leavitt Mark 8 torpedo Bliss-Leavitt Mark 9 torpedo Mark 10 torpedo Mark 11 torpedo Mark 12 torpedo
World War II	Mark 13 torpedo Mark 14 torpedo Mark 15 torpedo Mark 16 torpedo Mark 17 torpedo Mark 18 torpedo Mark 19 torpedo Mark 20 torpedo Mark 21 Mod 0 torpedo Mark 21 Mod 2 torpedo Mark 22 torpedo Mark 23 torpedo Mark 24 mine Mark 25 torpedo Mark 26 torpedo Mark 27 torpedo Mark 28 torpedo Mark 29 torpedo Mark 30 torpedo mine Mark 31 torpedo
Post-World War II	Mark 32 torpedo Mark 33 torpedo Mark 34 torpedo Mark 35 torpedo Mark 36 torpedo Mark 37 torpedo Mark 39 torpedo Mark 43 torpedo Mark 44 torpedo Mark 45 torpedo Mark 46 torpedo Mark 48 torpedo Mark 50 torpedo Mark 54 Lightweight Torpedo
Related topics	Bliss-Leavitt torpedo Schwartzkopff torpedo Whitehead torpedo
See also: American 18 inch torpedo, American 21 inch torpedo, Project Kingfisher, Mark 60 CAPTOR, RUR-5 ASROC, RUM-139 VL-ASROC, UUM-44 SUBROC, and UUM-125 Sea Lance