Abandoned tug 'St. Christopher' in the port of Ushuaia on 29, December 2018.

- Laid down, 20 January 1943, at Camden Ship Building & Marine Railway Co., Camden, ME.
- Launched, 18 October 1943
- Transferred to the United Kingdom under terms of the Lend-lease Act, 24 April 1944
- Commissioned HMRT Justice (W-140), at Boston, MA., 24 April 1944, LT. J. S. Allison, RNR, in command
- Reported to have served at Normandy landings
- Returned to US Naval custody, 20 March 1946, name withdrawn, reverted to BATR-20
- Struck from the Naval Register, 3 July 1946

Merchant Service:
- Sold 3 October 1947, to Leopoldo Simoncini, Buenos Aires, renamed St. Christopher, re-flagged Costa Rica
- Chartered in 1953 to Salvamar (Leopoldo Simoncini), Buenos Aires for salvage operations in Beagle Channel on
the sunken Monte Cervantes (wrecked in 1930), in conjunction with Argentine Navy vessels Chiriguanos, Guaraní and Sanavirón
- Suffered engine trouble and rudder damage in 1954, grounded in Beagle Canal
- Ashore and abandoned in 1957
- Remaining fuel oil removed in 2004
- Current Disposition, abandoned at Bahia Ushuaia, Argentina

Specifications:
Displacement: 852 t.(lt) 1,315 t.(lim)
Length: 165' 5"
Beam: 33' 4"
Draft: 15' 10" (lim)
Speed: 12.2 kts.

More info:
- http://www.histarmar.com.ar/HYAMNEWS/HyamNews2005/HY10-SaintChristopher-Ushuaia.htm
- http://www.navsource.org/archives/09/40/40020.htm