First of 10 Utility Vessels Delivered

MarineLink.com
Friday, February 21, 2014
Photo: Incat Crowther

Incat Crowther announced the first deliveries of a 10-boat order for 42m Infield Utility Vessels to Brunei’s PTAS Marine. Developed in conjunction with builder Strategic Marine, the project called upon Incat Crowther’s track record in steel crew boats to meet strict performance criteria.

PTAS has been contracted by Brunei Shell Petroleum to build and operate nine vessels to support their offshore platforms for a period of ten years. Incat Crowther supported Strategic Marine in their technical proposal for the project, committing to a timeframe of just 15 months from contract signing to the delivery of the ninth vessel. The 10th boat will be retained by PTAS as a backup vessel throughout the contract period.

The first of the vessels, PTAS Amanah 1, was delivered in December, with PTAS Amanah 2, PTAS Amanah 3 and PTAS Amanah 4 subsequently being delivered. The remaining vessels are nearing completion at Strategic’s Vietnam yard and undergoing sea trials.

The vessels’ hulls are built from steel, with aluminum superstructures. The vessels are classed to LR SSC rules.

The design features a 100-square-meter aft working deck, capable of carry 10 metric tons of cargo capacity. An aft platform is fitted for personnel transfers. The main deck cabin seats 30 personnel, as well as accommodating 100 survivors in the event that the vessel is called into an emergency situation. A sick bay is also located on this deck, as are a galley, crew mess and food storage for the vessel’s 12 crew.

The vessels’ crew sleep below decks, with a noise lock / service void separating them from the engine room. The vessel meets stringent noise requirements, which include a maximum volume of 65bBa in all accommodation spaces.

Additional features include oil dispersant spray booms port and starboard and an aft-facing firefighting monitor.

The vessels’ propulsion system consists of a pair of Cummins KTA38 outboard engines and a single Cummins KTA50 central main engine. The central engine drives the firefighting monitor, all three drive fixed-pitch propellers through Twin Disc gearboxes. They have a service speed of 20 knots and a top speed of 21.5knots.

Principal Dimensions
Length Overall: 137’ 10” / 42m
Length Waterline: 132’ 11” / 40.5m
Beam Overall: 26’ 3” / 8m
Draft (hull)” 5’ 11” / 1.78m
Draft (prop) 8’ 1” / 2.45m
Depth: 12’ / 3.65m
Construction (hull): Steel
Construction (superstructure): Marine grade aluminum

Capacities

Fuel Oil (day tanks): 3,434 gallons / 13,000 liters
Fuel Oil (long range tanks): 11,888 gallons / 45,000 liters
Fresh Water: 3,963 gallons / 15,000 liters
Sullage: 793 gallons / 3,000 liters
Oil Dispersant: 793 gallons / 3,000 liters
Deck Cargo: 10t
Deck Area: 100m2
Deck Load: 3.5t/m2
Personnel: 30
Crew: 12
Survivors: 100

Propulsion and Performance
Speed (Service): 20 knots
Speed (Max): 21.5 knots
Main Engines: 2 x Cummins KTA38-M2
1 x Cummin KTA50-M2
Power: 2 x 1007kW at 1,900rpm
1 x 1342kW at 1,900rpm
Propulsion: 3 x Fixed pitched propellers
Generators: 2 x Cummins 6BT5.9, 80ekW

Regulatory
Flag: Brunei
Class / Survey: LR 100A1 SSC Workboat Monohull G3 +LMC

incatcrowther.com

  • Photo: Incat Crowther

    Photo: Incat Crowther

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