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

Dimensions

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

Tank Capacities

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

Propulsion System

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

Performances

Bollard Pull (Ahead)	85+ tons
Bollard Pull (Astern)	80+ tons
Speed (Ahead)	13.0 knots
Speed (Astern)	12.5 knots

Auxiliary Equipment

Make/model	3 x Volvo Penta 6XD7TA
Power	130 ekW

Deck Equipment

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

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

Deck Equipment (Optional)

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)
Capacity
– maximum lift of 8 tons at 2.3 m
– maximum reach 12.3 m with lift up to 1.05 tons

Fire Fighting

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

Fendering

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

Accommodation

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.