USS YP-290 (ex-Picoroto) was a converted fishing vessel which served as an auxiliary patrol boat in the U.S. Navy during World War II.

She was laid down in 1937 at the Campbell Machine shipyard in Seattle, Washington[2] as a wooden hulled tuna boat and christened the Picoroto.

[3] Although slow at 10 knots, the wooden hulls of the tuna boats made them ideal for mine sweeping operations and their refrigerated holds suitable for delivery of perishables.

[5] The ships were tasked with patrolling their area of control, serving as a lookout for any enemy activity, and the rescuing of downed airman.

[5] In fact, the Japanese had on two occasions flown Kawanishi H8K "Emily" seaplanes to French Frigate Shoals where they met awaiting submarines to refuel.