The Society of Naval Architects of Japan has presented the "Kohyohsan", a 172,000-dwt Capesize bulk carrier built by NKK, the "Ship of the Year 2001" award
The society granted the title to the vessel in recognition of its unique ax-shaped bow that greatly reduces wave resistance under rough sea conditions.

The Kohyohsan is the first carrier to adopt the Ax-Bow, which NKK developed in response to growing demand from shipping operators for a ship with greater propulsion, particularly in wild seas. Working with Osaka University marine engineers, NKK focused on reducing ship resistance on the bow above the still water surface.

Conducting model ship tests, the NKK design team confirmed that a sharp-edged Ax-Bow can reduce a ship's sea margin considerably compared to conventional bows. Fuel oil consumption can also be reduced by some 4%, even under fully loaded conditions.

The Kohyohsan was delivered from NKK's Tsu Works to Erica Navigation S.A. of Panama in June 2001, and is now in service under charter by Mitsui OSK Lines.

To date, NKK has delivered five vessels fitted with the Ax-Bow, which it plans to adopt in its standard design for future Capesize bulk carriers