Ha-101-class submarine


The Ha-101 class submarine was a Transport submarine built for the Imperial Japanese Navy during World War II. The IJN planned to build 12 boats, but only 10 vessels were completed by the end of the war. The IJN called these submarines Sen'yu-Shō type submarine. The type name, was shortened to Yusō Sensuikan Ko-gata.
Several boats were converted to tankers or mother ships for the ''Ko-hyoteki class submarine midget submarines.

Design and description

The Ha-101-class submarines were designed as small, cheap transport submarines to resupply isolated island garrisons. They displaced surfaced and submerged. The submarines were long, had a beam of and a draft of. They were designed to carry of cargo.
For surface running, the boats were powered by a single diesel engine that drove one propeller shaft. When submerged the propeller was driven by a electric motor. They could reach on the surface and underwater. On the surface, the Ha-101s had a range of at ; submerged, they had a range of at. The boats were armed a single mount for a Type 96 anti-aircraft gun.

Planned construction

Project number S57. In February 1944, the IJN planned a small-size transport submarine, the IJA planned the Maru Yu.

Boats

Footnotes