Robert Allan Ltd. Delivers Tugs to Saudi Ports Authority & Abu Dhabi Ports Company

New RAmparts 3200-W Class Tugs for Saudi Ports Authority

Zamil Offshore Services have recently completed the construction of a series of three Robert Allan Ltd. designed RAmparts 3200-W tugs. The RAmparts 3200-W class are powerful ship-handling/terminal support tugs designed act as harbour, escort, pollution control and fire-fighting tugs, and will assist in mooring, unmooring and all maintenance requirements in the ports of the Kingdom of Saudi Arabia, in both the Red Sea and Arabian Gulf waters. The Saudi Ports Authority, owner of the Rasalkir 1, Rasalkir 2 and Rasalkir 3, has taken delivery all three tugs.

Robert Allan Ltd. worked closely with Zamil to establish the final specification and vessel layout for the demanding service of this tug. The hull form reflects the now well-proven double chine form that characterizes all Robert Allan Ltd. designs, with a sweeping chined stern. A large escort skeg is fitted forward to enhance the indirect towing capability and to provide enhanced roll stability.

The principal particulars of the Rasalkir 1 and its sisters, the Rasalkir 2, and Rasalkir 3 are as follows:

Length BP - 31.00 metres
Beam, Moulded - 12.00 metres
Depth, Moulded - 5.36 metres
Maximum Draft - 5.20 metres
Power - 4720 kW total

The vessels have been built and classed to American Bureau of Shipping notations.

The propulsion machinery consists of a pair of Yanmar 8EY26 medium speed diesels, each producing 2,360 kW at 750 rpm. This power is transmitted via two Kawasaki KST-220ZC/B Rexpellers. On trials, Ras Alkir 1, Ras Alkir 2 and Ras Alkir 3 met or exceeded all performance expectations with the following results:

Bollard Pull Ahead - 72 tonnes
Bollard Pull Astern - 67 tonnes
Free running speed, at full RPM - 13.5 knots

To enable extended endurance at sea, the vessel has the following tank capacities:

Fuel - 192.6 m³
Potable Water - 26.4 m³
Ballast - 34.8 m³
Foam - 10.6 m³
Detergent / Dispersant - 8.1 m³
Recovered Oil - 10.1 m³
Oily Water - 5.8 m³
Dirty Oil - 8.1 m³
Sewage - 10.2 m³

The Ras Alkir 1, Ras Alkir 2 and Ras Alkir 3, illustrated in the accompanying General Arrangement has the following design features:

Bridge Deck:

Wheelhouse: arranged to provide maximum all-round visibility, with overhead viewing windows, a split console forward, from where most of the driving is conducted, and a centre console facing aft, with fire-fighting controls and a similar driving position
A chart table is located to Port, and a communication station is located on the lower level of the wheelhouse, similarly to Port

Main Deck:

Deck locker: outfitted with shelving to store hoses, fittings, rescue equipment, SCBA air-packs, etc. commensurate with Class notation of FiFi 1
Mess / Lounge / Galley: comfortable seating area with television and an area for the crew to enjoy a meal between shifts
Flush-mounted, machinery access/removal flush hatch
Accommodation: cabins for Master and Chief Engineer, with private facilities

Below Main Deck:

Accommodation: lavatory facilities suitable for the crew of 6, a laundry, HVAC Room and access to the Engine Control Room and then to the Engine Room
Owners Stateroom: a comfortable single berth cabin, with ensuite, specifically set aside for an Owners representative

The RAmparts 3200-W is designed for maximum efficiency in the performance of ship-handling, escort, and related terminal support activity services. The vessel is equipped with a hawser winch, towing hook, forward, with heavy bow fendering for ship-assist and escort work. A towing hook and capstan are fitted aft for secondary towline duties. The RAmparts Class tugs are a proven, standardized Z-drive tug design. Each design is developed from a successful prototype vessel or series of vessels, and refined to emphasize ease of construction, and the Owners specific requirements.

These RAmparts 3200-W tugs are designed to perform a wide variety of tasks such as: Ship-handling, Escort, Anchor handling operations, Diving support, ROV support, Offshore personnel transfer, Safety or standby support, Rescue and salvage towing operations, Oil spill response, Off-Ship fire-fighting operations, Delivery of cargo to offshore drilling and production rigs that can include containers, various type of deck cargo, fuel oil, drilling water and potable water.

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Al Fenci and Al Durrah: Two New RAmparts 3200s by Grandweld for ADPC

The Al Fenci and Al Durrah, the first two new RAmparts 3200 tugs have been successfully delivered to Abu Dhabi Ports Company by Grandweld Shipyards. The vessels are specially designed to assist in marine and Harbour operation at Khalifa Port including escorting & towing, mooring/unmooring, and fire-fighting operations.

The design is based on an intended low-manning operation, with a high standard of machinery automation. Particular attention has been paid to the crew comfort, with high levels of noise and vibration control. This is has been certified by ABS with the HAB notation for workboats.

The Al Fenci and Al Durrah are classed and built according to American Bureau of Shipping notations.

Particulars:

Length O.A.: 32.00 metres
Beam, moulded, extreme: 12.00 metres
Depth, moulded (hull): 5.36 metres
Maximum Draft: 5.00 metres

Tank Capacities:

Fuel Oil: 113,000 litres
Fresh Water: 12,000 litres
Foam: 10,000 litres
Z-drive oil: 1,000 litres
Sludge: 1,500 litres
Oily Water: 1,500 litres
Main engine lube oil: 2,500 litres
Sewage: 3,500 litres

On trials, the vessels met or exceeded all performance expectations, with the following results:

Bollard Pull, ahead - 55 tonnes
Bollard Pull, astern - 50 tonnes
Free running speed, ahead - 13 knots
Free running speed, astern - 12 knots