Mine-Warfare Boats Built Since WWII

Most recent update: July 15, 2018.


In the 1950s, the Navy built a series of Minesweeping Boats (MSB) and another of Minesweeping Launches (MSL).  There appear to have been 54 MSBs and 56 MSLs, but the records are very sketchy.  The standard MSB was 44 tons and 57 feet long, while the MSL was 10 tons and 36 feet long.  Any information about these boats would be welcomed: please send your input to me at timcolton@aol.com.

Type # Shipbuilder LDT Feet Built Built for Disposition
Minesweeping Boats (MSB)
MSB 1 Norfolk NSY 44 57 1946 U.S. Army Early design, to USN 1949, discarded 1960s
MSB 2 Norfolk NSY 44 57 1946 U.S. Army Early design, to USN 1949, to South Korea 1962 as Pi Bong (MSB 1)
MSB 3 Mare Island NSY 44 57 1946 U.S. Army Early design, to USN 1949, discarded 1960s
MSB 4 Mare Island NSY 44 57 1946 U.S. Army Early design, to USN 1949, to Taiwan 1962
MSB 5 Trumpy Yachts 44 57 1952 U.S. Navy To Pate Museum 1973, scrapped 2011
MSB 6 Trumpy Yachts 44 57 1952 U.S. Navy  
MSB 7 Trumpy Yachts 44 57 1952 U.S. Navy  
MSB 8 Trumpy Yachts 44 57 1952 U.S. Navy  
MSB 9 Trumpy Yachts 44 57 1952 U.S. Navy  
MSB 10 Simms Bros. 44 57 1953 U.S. Navy  
MSB 11 Simms Bros. 44 57 1953 U.S. Navy Later Junie B 1971, foundered 1976
MSB 12 Simms Bros. 44 57 1953 U.S. Navy Later MS 12 1966, Flamingo, NLD 1990
MSB 13 Simms Bros. 44 57 1953 U.S. Navy  
MSB 14 Tacoma Boat 44 57 1952 U.S. Navy Sunk in Vietnam 1967
MSB 15 Tacoma Boat 44 57 1952 U.S. Navy Sunk in Vietnam 1966
MSB 16 Tacoma Boat 44 57 1952 U.S. Navy  
MSB 17 Tacoma Boat 44 57 1952 U.S. Navy  
MSB 18 Tacoma Boat 44 57 1952 U.S. Navy  
MSB 19 South Coast Co. 44 57 1952 U.S. Navy  
MSB 20 South Coast Co. 44 57 1952 U.S. Navy  
MSB 21 South Coast Co. 44 57 1952 U.S. Navy Sold 1974 as Cheri Lyn (ON 555202)
MSB 22 South Coast Co. 44 57 1952 U.S. Navy  
MSB 23 Defoe SB 44 57 1956 U.S. Navy Prototype of fiberglass-hulled design, burnt
MSB 24 Defoe SB       U.S. Navy Cancelled
MSB 25 Trumpy Yachts 44 57 1954 U.S. Navy To Panama 1993 as Santa Clara (L 15), retired 1996
MSB 26 Trumpy Yachts 44 57 1954 U.S. Navy  
MSB 27 Trumpy Yachts 44 57 1954 U.S. Navy  
MSB 28 Trumpy Yachts 44 57 1954 U.S. Navy To Panama 1993 as Nombre de Dios (L 16), active
MSB 29 Trumpy Yachts 81 80 1954 U.S. Navy Prototype of larger design, to Panama 1993 as Punta Mala (P 205), active
MSB 30 Peterson Builders 44 57 1954 U.S. Navy
MSB 31 Peterson Builders 44 57 1954 U.S. Navy Later HOC-1 1973, now Sumo (ON 544687)
MSB 32 Peterson Builders 44 57 1954 U.S. Navy  
MSB 33 Peterson Builders 44 57 1954 U.S. Navy Later Taku 1973 (ON 546698)
MSB 34 Peterson Builders 44 57 1954 U.S. Navy Later Sea Palm 1975 (ON 566408)
MSB 35 Owens Yachts 44 57 1954 U.S. Navy  
MSB 36 Owens Yachts 44 57 1954 U.S. Navy  
MSB 37 Owens Yachts 44 57 1954 U.S. Navy Later Jo Ann 1972 (ON 539833)
MSB 38 Owens Yachts 44 57 1954 U.S. Navy Later Harbor Queen 1977 (ON 582589)
MSB 39 Owens Yachts 44 57 1954 U.S. Navy
MSB 40 Simms Bros. 44 57 1954 U.S. Navy  
MSB 41 Simms Bros. 44 57 1954 U.S. Navy To Panama 1993 as Bastimentos (L 17), retired 2003
MSB 42 Simms Bros. 44 57 1954 U.S. Navy  
MSB 43 Simms Bros. 44 57 1954 U.S. Navy  
MSB 44 Simms Bros. 44 57 1954 U.S. Navy  
MSB 45   44 57 1954 U.S. Navy Sunk in Vietnam 1967
MSB 46   44 57 1954 U.S. Navy  
MSB 47   44 57 1954 U.S. Navy  
MSB 48   44 57 1954 U.S. Navy  
MSB 49   44 57 1954 U.S. Navy Sunk in Vietnam 1967
MSB 50   44 57 1954 U.S. Navy  
MSB 51   44 57 1954 U.S. Navy  
MSB 52   44 57 1954 U.S. Navy  
MSB 53   44 57 1954 U.S. Navy  
MSB 54   44 57 1954 U.S. Navy Sunk in Vietnam 1966
Minesweeping Launches (MSL)
MSL 1 Sagstad SY 10 36 1958 U.S. Navy  
MSL 2 Sagstad SY 10 36 1958 U.S. Navy  
MSL 3 Sagstad SY 10 36 1958 U.S. Navy  
MSL 4 Sagstad SY 10 36 1958 U.S. Navy  
MSL 5 Sagstad SY 10 36 1958 U.S. Navy  
MSL 6 Sagstad SY 10 36 1958 U.S. Navy  
MSL 7 Sagstad SY 10 36 1958 U.S. Navy  
MSL 8 Sagstad SY 10 36 1958 U.S. Navy  
MSL 9 Sagstad SY 10 36 1958 U.S. Navy  
MSL 10 Sagstad SY 10 36 1958 U.S. Navy  
MSL 11 Sagstad SY 10 36 1958 U.S. Navy  
MSL 12 Sagstad SY 10 36 1958 U.S. Navy  
MSL 13 Sagstad SY 10 36 1958 U.S. Navy  
MSL 14 Sagstad SY 10 36 1958 U.S. Navy  
MSL 15 Sagstad SY 10 36 1958 U.S. Navy  
MSL 16 Sagstad SY 10 36 1958 U.S. Navy  
MSL 17 Sagstad SY 10 36 1958 U.S. Navy  
MSL 18 Sagstad SY 10 36 1958 U.S. Navy  
MSL 19 Sagstad SY 10 36 1958 U.S. Navy  
MSL 20 Sagstad SY 10 36 1958 U.S. Navy  
MSL 21 Sagstad SY 10 36 1958 U.S. Navy  
MSL 22 Sagstad SY 10 36 1958 U.S. Navy  
MSL 23 Sagstad SY 10 36 1958 U.S. Navy  
MSL 24 Sagstad SY 10 36 1958 U.S. Navy  
MSL 25 Sagstad SY 10 36 1958 U.S. Navy  
MSL 26 Sagstad SY 10 36 1958 U.S. Navy  
MSL 27 Sagstad SY 10 36 1958 U.S. Navy  
MSL 28 Sagstad SY 10 36 1958 U.S. Navy  
MSL 29 Sagstad SY 10 36 1958 U.S. Navy  
MSL 30 Sagstad SY 10 36 1958 U.S. Navy  
MSL 31 Uniflite 10 36 1966 U.S. Navy  
MSL 32 Uniflite 10 36 1966 U.S. Navy  
MSL 33 Uniflite 10 36 1966 U.S. Navy  
MSL 34 Uniflite 10 36 1966 U.S. Navy  
MSL 35 Uniflite 10 36 1966 U.S. Navy  
MSL 36 Uniflite 10 36 1966 U.S. Navy  
MSL 37 Uniflite 10 36 1966 U.S. Navy  
MSL 38 Uniflite 10 36 1966 U.S. Navy  
MSL 39 Uniflite 10 36 1966 U.S. Navy  
MSL 40 Uniflite 10 36 1966 U.S. Navy  
MSL 41 Uniflite 10 36 1966 U.S. Navy  
MSL 42 Uniflite 10 36 1966 U.S. Navy  
MSL 43 Uniflite 10 36 1966 U.S. Navy  
MSL 44 Uniflite 10 36 1966 U.S. Navy  
MSL 45 Uniflite 10 36 1966 U.S. Navy  
MSL 46 Uniflite 10 36 1966 U.S. Navy  
MSL 47 Uniflite 10 36 1966 U.S. Navy  
MSL 48 Uniflite 10 36 1966 U.S. Navy  
MSL 49 Uniflite 10 36 1966 U.S. Navy  
MSL 50 Uniflite 10 36 1966 U.S. Navy  
MSL 51 Trumpy Yachts 10 36 1966 U.S. Navy  
MSL 52 Trumpy Yachts 10 36 1966 U.S. Navy  
MSL 53 Trumpy Yachts 10 36 1966 U.S. Navy  
MSL 54 Trumpy Yachts 10 36 1966 U.S. Navy  
MSL 55 Trumpy Yachts 10 36 1966 U.S. Navy  
MSL 56 Trumpy Yachts 10 36 1966 U.S. Navy