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RAstar Class
The RAstar Escort/ Offshore Terminal Tug designation is reserved for a unique class of very high-performance ASD tugs, designed with a sponsoned hull form, which has been proven in both model and full-scale testing to provide significantly enhanced escort towing and seakeeping performance. The escort forces are enhanced by the effects of the sponson as well as the foil-shaped escort skegs fitted. Roll motions and accelerations are less than half those of comparable sized "standard" tug hulls. These tugs will typically be high-powered, and are intended for escort operations in weather and sea-exposed areas such as many new LNG terminals where a high standard of sea-keeping is required.
RAstar Class tugs are classified according to their approximate length, e.g. RAstar 3400 (34 metres Length), and a range of powers can be accommodated within each hull size according to the specific operational needs. Accordingly there may be beam variations with the same length series.
Presently, the following RAstar Class tug designs are available:
RAstar 2700 Cheradi
??-?? tonnes Bollard Pull
Press Release - March 19, 2010
RAstar 2800 Seaspan Raven
55-75 tonnes Bollard Pull
Press Release - January 20, 2011
RAstar 3200 SMBC Monterrey
65-80 tonnes Bollard Pull
Press Release - May 15, 2009
RAstar 3400 Svitzer Waterston
70-95 tonnes Bollard Pull
Press Release - December 9, 2008
RAstar 3600 Lamnalco Sana'a
70-100 tonnes Bollard Pull
RAstar 3800 Rawasi
68 tonnes Bollard Pull
Press Release - January 13, 2010
RAstar 3900 Svitzer Kilroom
90-120 tonnes Bollard Pull
Press Release - January 13, 2009