In May, Bayou La Batre, Ala.-based Master Boat Builders delivered the 201'×48'×16', DP-2 Harvey Worker to Harvey Gulf InternationalMarine, Harvey, La. 

Designed by Master Boat, the new platform supply vessel is the first of three PSVs that Master Boat is building for Harvey Gulf. The Harvey Worker and a sistership were originally part of a multiboat contract for Abdon Callais Offshore. Harvey Gulf purchased ACO’s assets in October for $460 million.

“This one and the next one are from the Abdon Callais contract,” said Andre Dubroc, the yard’s general manager. “We’re getting ready to deliver the second one. Those are domestic boats. The third one is a new contract we signed with Harvey Gulf after the sale. That boat will be different than these two. For one thing, it will be full SOLAS. But that one won’t be delivered until next year.”

The Harvey Worker, sporting a draft of 14', has tankage for 112,000 gals. of fuel; 4,280 bbls. of liquid mud; and 5,400 cu. ft. of bulk mud in four tanks. The boat’s rear cargo deck measures 146'×40' and can haul up to 800 LT of freight.

Main propulsion comes from twin Caterpillar 3512C diesels, producing 1,911 hp at 1,600 rpm each. The Cats are connected to 82"×70", 5-bladed bronze Rolls-Royce Hung Chin propellers through Twin Disc MGX-5600 red slip clutch marine gears with 5.04:1 reduction ratios. The propulsion package can move the boat at a running speed of 11 knots loaded. The OSV was also fitted with a pair of Omega 1160 450-hp thrusters.

Ship’s service power is provided by a pair of Cat C-32 gensets, each 910 kW.

Controls are Twin Disc EC-300DP, the steering is controlled through a Jastram split rudder system from Gulf Coast Air & Hydraulics and the DPS-2 system is from Kongsberg.

New World Electronics handled the electronics package.

The Harvey Worker is ABS classed Maltese Cross A-1, DPS-2, offshore supply vessel, loadline under 100 gt.

Master Boat also delivered the Seacor Fearless, the third of six 201'×48'×18', DP-2 OSVs, to Seacor Marine, Houma, La., in April. 

The yard designed the vessel and worked with Seacor on other design details.

Tankage includes 5,000 bbls. of liquid mud; 4,500 cu. ft. bulk mud; and 139,758 gals. fuel. The OSV also has a 144'×38', 600-LT capacity cargo deck. The boat has a dwt of 2,031 LT.

Main propulsion comes from twin Cat 3512C Tier 3 diesel engines, each producing 1,911 hp at 1,600 rpm. The Cats are connected to 82"×70", 5-bladed bronze propellers through Twin Disc MGX-5600 red slip clutch marine gears with 5.04:1 reduction ratios. The propulsion package produced a running speed of 12 knots (11 knots at full load) during sea trials.

Seacor Fearless boasts four Schottel thrusters — two STT 1FP, 600-hp electric, frequency-drive bowthrusters and two STT 170FP, 300-hp electric, frequency-drive stern thrusters.

The vessel has a Jastram split rudder steering system supplied by Gulf Coast Air & Hydraulics, Twin Disc EC-300DP controls, and a Kongsberg K-Pos DPS-2 system.

Two parallel-operating Caterpillar C32 gensets, rated at 910 kW each, provide the Seacor Fearless with service power.

The new OSV also carries a FiFi1 firefighting system driven by twin dedicated Cat C32 diesels rated at 1,000 hp each.

New World Electronics provided the electronics package.

The Seacor Fearless is USCG certified, Subchapter L; ABS Maltese Cross A-1 classed; AMS; DPS-2 offshore support vessel, loadline under 1,600 tons; ITC; SOLAS; IMO; ABS Maltese Cross firefighting vessel Class 1.

— Ken Hocke