ULSTEIN PX121 for Otto Offshore

Ulstein Design & Solutions entered into a contract with Wuchang Shipbuilding Industry Co., Ltd, China, for the delivery of ship design & equipment to four PX121 type platform supply vessels. The ship owner is the Singapore based Otto Offshore Ltd., which is scheduled to receive all vessels in 2016. The contract also includes an option for four vessels.
These PX121 vessels are capable of supporting offshore activities which are being carried out further from shore and in deeper waters. The vessels can carry flexible loads. In addition to tanks for various contents such as oil, water, and drilling fluids, they have four stainless steel tanks for flammable liquids or corrosive chemicals (LFL tanks). The vessels are certified by DNV and carry the ‘Clean Design’ notation.
Measuring 83.4 m long with a beam of 18 m, they have a cargo deck of 840 sq. m. and a load capacity of 4,000 tons (dwt).
Each ship has a maximum speed of approximately 14.5 knots and accommodates 30 people. They carry the X-BOW hull line design, which is designed to be efficient on all drafts, a factor critical for PSVs, as they frequently operate with varying drafts. The X-BOW has unique and documented qualities in head seas, in which the bow shape eliminates slamming and reduces bow impact, noise and vibration. This leads to better performance and increased operability, increased crew comfort and safety and reduced fuel consumption. Each ship will be equipped with dynamic positioning system Class II and meets the requirements of Comfort Class.
Otto Offshore is a company in Otto Marine Ltd. The contract with Ulstein includes the deliveries of design, engineering and main equipment. An extensive delivery from Ulstein Power & Control includes integrated control systems, bridge (radio, navigation), switchboard, diesel electric propulsion and frequency converters, and communication systems. The vessels will be prepared for offshore crane and mezzanine deck for ROVs.

(As published in the September 2014 edition of Marine Technology Reporter - http://www.marinetechnologynews.com/Magazine)