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Friday, July 9, 2021 

Canadian naval architect Robert Allan Ltd (RAL) says that 'Bamse', a TRAktor 3000-Z tug, built by Sanmar Shipyards in Altinova, Turkey, has been delivered to Norwegian operator Bukser og Berging.

This vessel is the first of a two-boat order and will operate out of Brevik, Norway. The design was developed working closely with both Bukser og Berging and Sanmar to arrive at a design achieving not only the Owner’s requirements but also suiting Sanmar’s tug building practice. Bamse will conduct escort operations through tight narrow passages in and out of the terminal in the Oslo Fjord. With a top speed of 14 knots and capable of producing steering forces in excess of 80t, it will be able to connect to assisted ships at 10 knots in heavy weather typical for the area. To achieve this performance extensive CFD simulations were completed during the design phase in order to optimise escort capability.

All operations will be conducted while keeping Bamse’s emissions footprint low, with it being the first IMO Tier III Tug in Bukser og Berging’s fleet, and the first-Tier III tug to be built by Sanmar Shipyards. Main engines are Caterpillar 3516E high speed units, rated at 2200kW and fully IMO Tier III compliant with SCR units. Z-drive units are Schottel SRP 490 CP with 2.8m propeller diameter.  Bamse’s resulting bollard pull is 75t.

The 30.45m long tug was designed and constructed with to Class Notation ABS ✠ A1, Escort Vessel, Fire Fighting Vessel Class 1, ✠ AMS, ✠ ABCU, Unrestricted Navigation.

Deck machinery features an escort winch from Karmøy, tugger winch, stern tow pins and deck crane. The mooring equipment is designed for 50t SWL and can be used in a towing by the hip arrangement.

Accommodation is provided for a crew of seven. The wheelhouse provides maximum all-round visibility with visibility to the bow and side fendering, as well as the aft deck. The single split control station with sliding control heads allows the Master to face either forward or aft depending on the type of operation.

Typical of Sanmar builds, the engine room features an acoustically isolated switchboard room. Measurements during sea trials show all crew cabins and the mess/lounge have noise levels lower than 60 dB(A). In the wheelhouse the noise level is lower than 55 dB(A).

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