September 4, 2015
The Resilient and Resolute, the latest additions to the RAmparts 3200-CL series of ASD tug designs by Robert Allan Ltd., were delivered to their owner, PSA Marine of Singapore, by Cheoy Lee Shipyards in April and June of 2015 respectively. They join the existing sister tug Rubicon completed by the same builder in 2014, all three vessels operate in the Singapore area.
The RAmparts Series tugs from the design portfolio of Robert Allan Ltd., Naval Architects of Vancouver, BC are a series of now exceptionally well-proven ASD tug designs. Each of these designs has been developed from a successful prototype vessel or series of vessels, and refined to emphasize ease of construction. Each new delivery is also custom-tailored to the needs of each individual Client.
The vessels are high performance Azimuthing Stern Drive (ASD) tugs, specialized for ship-assist service and coastal towing, and uniquely designed to operate in an area of restricted water depth.
Particulars of the two vessels are as follows:
- Length overall: 32.00 m
- Beam, moulded, extreme: 12.40 m
- Depth, moulded (hull): 5.40 m
- Summer Load Draft: 4.19 m
The tug was designed and constructed to Lloyds Register Class with notation of *100 A1, Tug, Fire Fighting Ship 1, UMS, *LMC, IWS, Unrestricted Voyages.
Tank capacities are as follows:
- Fuel Oil: 235 m³
- Fresh Water: 50 m³
- Foam: 7 m³
- Dispersant: 7 m³
- Sewage: 4.5 m³
- Recovered Oil: 34 m³
On trials, Resilient and Resolute met or exceeded all performance expectations, with the following results:
- Bollard Pull, ahead: 60 tonnes
- Bollard Pull, astern: 55 tonnes
- Free running speed, ahead: 12.5 knots
The vessel has been outfitted to the high standards for a crew of up to 10 people. The deck machinery comprises forward hawser/anchor winch, aft towing winch, towing hook, deck crane, mooring bitts at forward, midship and aft deck.
The lower deck contains four 2 crew cabins; a double shower stall lavatory, a galley store and main switchboard room. The wheelhouse is designed for maximum all-round visibility with forward and aft control stations providing maximum visibility to both fore and aft deck working areas.
Main propulsion for each tug comprises a pair of Niigata 6L28HX diesel engines; each rated 1654 kW at 750rpm, and driving a Niigata ZP-31B fixed pitch Z-drive unit, in ASD configuration.
The electrical plant comprises 2 identical diesel gen-sets, each with power output of 112 ekW.
Ship-handling fenders at the bow comprise two rows of 800 x 400 cylindrical fenders; a 480 x 300 mm “W” block type fendering below. One 300 x 300 hollow “D” fender provides protection at the main and foc’sle deck sheer lines, and 500 x 450 mm “W” block type fendering is used at the stern.
For more information on the Resolute and Resilient or any of the RAmparts 3200-CL Class tugs, or on any other vessel designs developed by Robert Allan Ltd., please contact email@example.com.