Project Description

Büyükdere RAstar3400

Büyükdere RAstar 3400
LOA 34.00 m
Beam moulded 14.50 m
Draft extreme 6.0 m
Fuel oil 215.9 m3
Main Engine Power 2×2720 kW
Speed ahead 13 knots
Bollard Pull ahead 85 tons

RAstar 3400

This Specification describes the general requirements of a new Class of high-performance terminal support and escort tug designated as the RAstar3400 design.

RAstar Class tugs have been developed to offer truly superior ship-handling and sea keeping performance at exposed terminal locations, docking and escorting ships in more extreme sea-states than is the norm. The unique sponsoned hull form provides proven dramatic reductions in roll amplitude and accelerations, in comparison to more conventional hull forms.

RAstar Class tugs are of robust, all-welded steel construction, with scantlings in excess of the minimums of Classification Society design rules.

The tugs will support an expansion of LNG facilities at Ports. The tugs are to assist very large ships in berthing and departing from berths, and to escort these ships through a narrow channel which experiences extreme weather conditions, with wave heights up to 3 metres and wind speeds of over 40 knots. Due to these extreme operating conditions, special attention has been paid to vessel design and in particular the bow fendering and towing equipment.

The RAstar3400 is intended as a dedicated terminal and harbour support tug, working off a forward towing winch, but can also be equipped for coastal towing and offshore emergency towing with heavy duty towing winch and towpins aft.

The tug shall be fully outfitted for safe and efficient performance of the following tasks:

  • External fire-fighting including waterspray and Fi-Fi 1
  • Oil spill response/oil recovery (some necessary equipment shall be provided by Owner)

The vessel is equipped with automation and instrumentation for normal duty operations with a minimum crew, and a periodically unmanned engine room.

Technical Details

Length overall 34.0 m
Breadth moulded 14.50 m
Depth moulded 6.0 m
Draft extreme 6.0 m
Draft hull 4.88 m
Fuel oil 215.9 m3
Fresh water ballast 69.9 m3
Foam 22.8 m3
Black Water 7.2 m3
Grey Water 3.6 m3
Oily Water 3.2 m3
Fresh Water Ballast 70 m3
Main Engines WARTSILA 8L26
Engine Power 2 x 2720 kW @ 1000 rpm
Thrusters Rolls Royce US35 CP
Propeller Dia 2800 mm
Nozzles Mild Steel
Shafting Solid shafts including two cardan each end
Resilient Mount Vulkan
Silencer -35 dba sound attenuation, spark arresting type
Bollard Pull (Ahead) 85+ tons
Bollard Pull (Astern) 80+ tons
Speed (Ahead) 13.0 knots
Speed (Astern) 12.5 knots
Make/model 3 x Volvo Penta 6XD7TA
Power 130 ekW

Hawser Winch/Anchor Windlass
Type : TW-E1000KN
Electrical driven winch with two single rope drums. Adjustable auto tension mode. Wire capacity 200 m of dia. 76 mm synthetics rope on six layers on both drums. Band brake holding load: 200 tonnes.

Haul-in, 1st speed 85 ton at 0 – 8 m/min
Rendering, 1st speed 12.5 ton at 0 – 60 m/min

Tow Hook
– Two Disk type Data Tow Hook
– SWL 100 tons
– Pneumatic auto-release

– Marine type hydraulic or electrical driven
– Maximum pull 5 tons

Aft Towing Winch (optional)
Single rope drum with band brake, brake rim with stainless steel lining, one spooling gear suitable for 52 mm wire, and two fixed warping ends. One declutchable rope drum with band brake. Specific rope minimum 800 m of dia 52 mm steel wire on approx. eleven layers. Band brake holding load:200 ton

– Haul-in, 1st speed: 50 ton at 0 – 15 m/min

Deck Crane (optional)
Class certified crane, wire, pulley, hook with overload protection
Marine grade hydraulic, knuckle-boom/folding boom type crane, Palfinger 18500(M)
– maximum lift of 8 tons at 2.3 m
– maximum reach 12.3 m with lift up to 1.05 tons

Fire-fighting capability; to Fi-Fi 1 standard

M/E driven fi-fi pumps

2 x Main fire pumps :
–   driven through clutched flexible coupling on front of each main engine
–   Capacity; 1,400 m3/hour each

2 x Monitors :
–   FFS foam/water monitors
–   Remote operated, electric controls

Heavy duty rubber fender system as follows:

–   Bow           – 1000 OD x 500 ID cylindrical
–   Stem          – W type
–   Sides         – D type
–   Stern         – 600 OD x 300 ID cylindrical

2 cabins for 2 senior officers, 3 crew cabins for 6 crews, total 8 persons, mess/lounge, galley, stores, WC’s and shower.
North European Standards in Comfort and Quality. Heated floors on WC’s. Cabins with plugs for TV and GSM Aerials, teak imitating IMO approved floor meterial. Sound levels at apprx. %80 engine load are below 60 dB in cabins and below 70 dB in wheelhouse, corridors and mess room.
All accommodation space is heated vented and air-conditioned by Heinen Hopman Engineering

IMO requirements
ISO standards referenced above base fresh air requirements on a minimum of 20 m3 /hour per person for each individual space, assuming maximum occupancy of the space

Secondary AC unit in wheelhouse
Cold climate package
Hot climate package
Special care has been given to resilient mount all engines and essential equipment including hydraulic pipes. Sound levels are according to requirements of Flag Authorities
Unattended machinery space according to ABS ABCU notation. LED panels at mess room and chief engineer cabin. Extended operation of electrical system, essential pumps and engine room fans can be controlled from wheelhouse.
Magnetic compass, Gyro compass, Weather Station, Radar, Gps, Echo Sounder, Speed Log, Autopilot, Epirb,
Sart, GMDSS Vhf, MF/HF, GMDSS Gand Held VHF, Navtex, Fax Reciever, Inmarsat-C, AIS, BNWAS, GMDSS A2
Hands free operation of VHF’s
Hands free operation of intercom
Remote operation of VHF from messroom , captain’s cabin
Secondary Radar with overlay
Aft monitor for radar
Bilge Separator
Box Cooler
Sliding Door
Sewage Treatment System
D/O separator
Vacuum toilet
Solas Boat & Crane
Double Navigation Lights
Remote operated searchlights
Stainless Steel Galley
Two speed E/R fans with silencers
Heated windows and Wipers
Fresh water ultraviolet sanitizer
Heated floors for wet spaces
LNG protection system
BV 1 Hull Machinery, Escort Tug, AUT-UMS, CLEANSHIP(2), IWS, Fire-Fighting 1, waterspraying, Unrestricted Service

Detailed technical specification for BÜYÜKDERE RAstar 3400 series below.

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