The Natsushima-class minelayer (夏島型敷設艇,, Natsushima-gata Fusetsutei) was a class of minelayers of the Imperial Japanese Navy (IJN), serving during and after the 1930s through World War II.

Their design was based on the Tsubame class, but with increased armament.

Natsushima (夏島) Nasami (那沙美) Project number H5B.

She was built as diesel engine experiment ship.

Her results were made use of in the Sokuten class.