Master Boat Builders delivers pair of OSVs

Master Boat Builders, Bayou La Batre, Ala., has delivered two supply boats to Abdon Callais Offshore, Golden Meadow, La. — the Blanche Callais in August and the Early Bird in October. 

The 166’×36’×12’ steel vessels are described by Andre Dubroc, the yard’s general manager, as “designed to carry the maximum amount of liquid mud for their size. Both are under 100 tons. Basically everything is there. They’re DP ready. And they’re the first vessels to meet the new security requirements.” 

Capacities include 43,000 gals. of fuel; 2,200 bbl. liquid mud; 36,000 gals. methanol; and 52,000 gals. ballast water.

Both vessels have berths for 20 crew. 

Main propulsion is provided by two Cat 3508B diesels, each providing 850 hp at 1,200 rpm. The mains connect to Rolls Royce Hung Chin, 4-bladed 64”×54” bronze wheels through Twin Disc MG-6690 marine gears with 3.21:1 reduction ratios. During sea trials the vessels made 11 knots loaded. 

The Blanche and Early Bird are both working around oil and gas platforms in the Gulf of Mexico. Consequently, the boats were each fitted with a Schottel STT-170 bowthruster powered by a Cat C-18  that delivers 450 hp at 1,800 rpm. 

The controls for the OSVs are electronic Mathers Master Command, and the steering system is a split rudder by Jastram, supplied by Gulf Coast Air & Hydraulics. 

For ship’s service power, each boat has a Cat 3304 genset, sparking 99kw of juice. 

New World Electronics supplied the electronics suites. 

The boats are certified USCG Subchapter L and ABS classed load line under 100 gross tons.

    — Bob Gustafson 


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