Robert Allan Designs Tug for Rio Tinto

MarineLink.com
Friday, May 10, 2013
Pilbara Apollo (Photo: Robert Allan)

The Pilbara Apollo, the latest addition to the RAstar 3200 escort tug series was delivered to its owners, Rio Tinto Ltd., earlier this year. The vessel was constructed at Uzmar Shipbuilding Industry Co. in Turkey and will operate at Rio Tinto’s iron ore export facilities at Cape Lambert (Port Walcott) and Dampier, Australia. The Pilbara Apollo is the first of six new RAstar 3200 tugs to be delivered to Rio Tinto as part of this contract. The tugs will assist very large ore carriers in berthing and un-berthing at exposed, open water berths in severe wind and wave conditions.

The unique sponsoned hull form of the RAstar Class vessels gives these new tugs a level of safety and comfort that will enable operation in conditions that were previously deemed unworkable. This unique RAstar hull form developed by Robert Allan Ltd. has been proven in both model and full-scale testing to provide significantly enhanced escort towing and seakeeping performance. The motions and accelerations are less than half those of comparable sized, wall- sided “standard” tug hulls.
Particulars of the Pilbara Apollo are as follows:

Overall length: - 32 m (excluding fenders)
Beam, molded: - 12.80 m
Depth, molded (hull): - 5.37 m
Navigational draft (DWL): - 6.03 m

Pilbara Apollo was classed by Bureau Veritas during construction, but will be converted to Lloyd’s Register once in Australia.

Tank capacities are:

Fuel Oil: - 129 m3
Fresh Water: - 39 m3
Z-drive Oil: - 1.0 m3
Sludge: -2.7 m3
Oily Water: - 14.5m3
Main engine lube oil: - 3.4 m3
Sewage: - 5.7 m3

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

Bollard Pull, ahead: - 80.9 tons
Bollard Pull, astern: - 77 tons
Free Running speed, ahead: - 14 knots

Main propulsion for each tug comprises a pair of CAT 3516C HD diesel engines, each rated 2350 kW at 1800 rpm, and each driving a Rolls Royce US255 Controllable Pitch Z-drive unit.

The hydraulic deck machinery, all from Ridderinkhof, consists of a split-drum escorthawser winch on the foredeck, and a single drum towing winch aft.

The electrical plant consists oftwoCAT C6.6 diesel gen-sets, each with a power output of 100 ekW.

The vessel has been outfitted to the highest standards for a crew of up to six people. The lower deck contains crew quarters and the Master and Chief Engineer staterooms. The wheelhouse is designed for maximum all-round visibility with a forward control station providing maximum visibility to both fore and aft deck working areas.

Ship-handling fenders at the bow consist of two rows of 1,000 mm deep, 1,400 mm wide custom designed “W” fenders. Extruded hollow 300 x 300 square section rubber fenders provide protection at the main sheer line, and 500 mm wide by 450 mm deep “W” block type fendering is used at the stern. The fendering system was devised by the Owner’s representative Neil Edwards, working in close cooperation with the design team at Robert Allan Ltd. and the fender suppliers, Maritime International. The fendering system was subject to extensive FEA analysis to verify the responses and loads. Early indications from the operators are that this solution will perform very well in the rough sea conditions.

www.ral.ca

  • Pilbara Apollo (Photo: Robert Allan)

    Pilbara Apollo (Photo: Robert Allan)

  • Pilbara Apollo (Photo: Robert Allan)

    Pilbara Apollo (Photo: Robert Allan)

  • Pilbara Apollo (Photo: Robert Allan)

    Pilbara Apollo (Photo: Robert Allan)

  • Pilbara Apollo (Photo: Robert Allan)
  • Pilbara Apollo (Photo: Robert Allan)
  • Pilbara Apollo (Photo: Robert Allan)

Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter June 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Shipbuilding

Fincantieri Delivers Seven Seas Explorer

The first of two ultra luxury cruise ships delivered for Regent Seven Seas Cruises   Seven Seas Explorer, the newest ultra luxury ship of Regent Seven Seas Cruises,

Damen Signs MOU with Sydney City Marine

Damen Shipyards Group and Sydney City Marine have signed a Memorandum of Understanding (MOU) outlining the future cooperation of the two companies concerning the

Rolls-Royce Azimuth Thrusters Ordered for New Tug

Rolls-Royce has won an order for US255 FP z-drives from San Francisco’s Vessel Chartering LLC, a wholly owned division of Baydelta Navigation. The thrusters will

Workboats

Solstad CSV Gets Propulsion Overhaul at Gibdock

Gibraltar’s Gibdock shipyard has completed its scope of work on Solstad Shipping’s Normand Cutter, a 127-meter-long, 10,979grt construction support vessel (CSV)

Rolls-Royce Azimuth Thrusters Ordered for New Tug

Rolls-Royce has won an order for US255 FP z-drives from San Francisco’s Vessel Chartering LLC, a wholly owned division of Baydelta Navigation. The thrusters will

US Workboat Market: Domestic Drivers

Sectors of the U.S. market are hot, but for how long? Five key variables drive the domestic brown water market.   The challenging operating climate currently facing blue water,

Naval Architecture

SENER Hosts FORUM Users Meeting

The SENER engineering and technology group has finished its ninth FORUM (the FORAN Users Meeting) designed so that FORAN users from all over the world can share their experiences and concerns,

Wärtsilä to Power Two Indian Dredgers

Wärtsilä has won an order for two new 8000m3 trailing suction hopper dredgers being built for the Adani group, India's largest private multi-port operator. The

Austal Delivers LCS 8 to US Navy

Austal Limited (Austal) (ASX:ASB) delivered the future USS Montgomery (LCS 8) to the U.S. Navy, during a ceremony held aboard the ship at Austal USA’s shipyard in Mobile, Alabama, USA on 23 June.

 
 
Maritime Security Maritime Standards Naval Architecture Navigation Offshore Oil Pipelines Pod Propulsion Port Authority Ship Simulators Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1980 sec (5 req/sec)