Under GL's new Rules for Hull Structures of Offshore Service Vessels which come into force next month, the class notation 'OFFSHORE SERVICE VESSEL' will be assigned, complemented by optional further notations, such as HNLS for ships carrying hazardous and noxious liquid substances, AH for anchor handling tug/supply ships, WSV for well stimulation vessels, and WTIS for wind turbine installation/construction support ships.
Today's expanded definition of an OSV includes not only traditional supply boats, but also anchor handling tug/supply ships, well stimulation ships, standby ships, and even ships built to carry hazardous and noxious substances, to fight fires, or to occasionally recover oil. Wind turbine installation ships are also covered, points out GL.
The new Rules for Offshore Service Vessels, I-6-1, Hull Structures, are posted on GL’s website www.gl-group.com .