First LNG-powered tug sets sail

The LNG-fueled tugboat Borgøy successfully completed sea trials this month and started its maiden voyage on Jan. 14. The 35 m stern drive terminal tug was designed by Norwegian Buksèr og Berging in-house team with the assistance of Marine Design AS in Norway, and further developed by Sanmar’s shipyard in Istanbul.  Borgøy is the world’s first tug to be fuelled liquefied natural gas, according to Sanmar.

The engines, propulsion package and LNG system has been delivered by Rolls Royce. Usage of LNG in this tugboat eliminates sulphur emissions, bring particulate matter emissions down close to zero and reduce the discharge of CO2 and NOx by 26 percent and 80-90 percent respectively. Borgøy will be operated by Buksèr og Berging in Statoil’s Kaarstoe Gas Terminal

Specifications 

LOA : 35 m
Beam (max) : 15 m
Depth : 7.5 m
Draft : 5.5 m
Main engines : Two Bergen C26:33L6PG 1705kW@1000 rpm LNG fuelled each, spark arrestor silencer,air start, plate type heat exchanger cooling,
Bollard pull : 68 tons
Steering pull Tonnes : 110 tons at 10 knots
Service speed : 13,5 knots
Gen.Sets : Two Nordhavn/Scania Diesel GASI 12-07-10-60G 240ekW each 400 V, 50 Hz
Propulsion units : Two Rolls Royce US35 CP
Propellers : 3000 mm diameter, CP, 4 bladed CuNiAl.
Bow thruster : Schottel SPJ 82- 333 kW
Towing winch : Karmoy, hydraulic driven, Escorting capability, drum capacity of apprx. 250 m, rope 72 mm dia (fore) and 600 m 57mm dia (aft), line pull 130 t at 0-275 m/minute, brake capacity: 250 tonnes at bare drum.
Fendering : Heavy duty rubber fender fitted.
    – bow: 800 OD x 400 mm ID cyclindrical
    – lower bow:”W” block type, 300mm deep
    – main sheer: 250mm hollow “D” section from bow to stern
    – stern: “W” block fender, 300mm deep
Navigation : FURUNO – Radar (2), GPS, DGPS Compass, GYRO compass, Satellite Compas, Echo-sounder, AIS, NMEA distributer, Autopilot , Speedlog, wheather station. EPIRB, SART, VHF, SSB, Navtex, BNWAS, UHF hand radios,
Wheelhouse : Heated wheelhouse windows, fore and aft, straightline heavy duty wipers
Deck crane : Heila HLRM 90-5S
Life saving eq. : Two liferaft for 12 person, 14 life jackets, 12 life buoys, four safety work vests, line throwing apparatus, escape sets, etc. according to Flag and Class Rules
Accomodation : Two single and two double cabins, lavatory and pantry with freezer and refrigerator, heated floors on WC’s. Sound levels at approximately 80 percent engine load are 60-65 dB in cabins and approximately 65 dB in wheelhouse corridors and mess room.

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