T1 tankers are about 200 to 250 feet (61 to 76 m) in length and are able to sustain a top speed of about 12 knots (22 km/h; 14 mph).
The small size also gives the ships short turn around time for repair, cleaning, loading and unloading.
Most T1 ships during World War II were named after major oil fields.
[1] T1 tankers are operated by the US Navy, War Shipping Administration and United States Maritime Commission.
If operating as a United States Merchant Marine ship, the crew would be a mix of civilian Merchant Mariners and United States Navy Armed Guards to man the guns.