The No.1-class patrol boat (第一号型哨戒特務艇,, Dai Ichi Gō-gata Shōkai-Tokumutei) was a class of auxiliary patrol boat (picket boat) of the Imperial Japanese...

The No. 1-class patrol boat (第一号型哨戒艇,, Dai Ichi Gō-gata Shōkaitei) was a class of patrol boats of the Imperial Japanese Navy (IJN), serving during World...