USCGC Modoc (WPG-46) was a 240-foot Tampa class United States Coast Guard cutter designed for multi-mission roles. She had a top speed of sixteen knots, and was armed with a pair of 5-inch deck guns. With the breakout of war it was armed with depth charges, additional guns, sonar, and radar and transferred to the Navy. The Modoc, along with her sister ships USCGC Mojave (WPG-47) and USCGC Tampa (WPG-48) joined the Greenland Patrol.