Bollinger Marine Fabricators on Lytal Ashley - an oilfield supply vessel (OSV) for Lytal Ocean. In addition, a contract has already been formalized for a nearly identical sistership Lytal Andre, which is scheduled for delivery in April 2001.
Both vessels will measure 146 ft. (44.5 m), each with a 36-ft. (10.9 m) beam and a depth of 11 ft. (3.3 m) Normal operating draft will be 10 ft. (3 m) and speed is expected to be 12.5 knots. Bollinger's engineering department designed the vessels to meet and exceed new regulatory requirements, which is less than 100-gt and less than 500-gt registered tonnage.
Two Detroit Diesel engines developing a total of 1,400-bhp will power each OSV. They will drive 70-in. diameter by 67-in. pitch, four-blade Bird Johnson propellers through Twin Disc gears. A Schottel bowthruster will be installed on each vessel driven by a Detroit Diesel engine to aid maneuverability.
Each OSV will boast 3,000 sq. ft. of space on the aft deck, which can handle up to 350 LT of cargo. Below decks, each will be equipped with four Bollinger mud tanks, which can carry a total of 50,200 gallons of liquid mud.
In addition, Bollinger has delivered Helen III, a 320 x 80 ft. (97.5 x 24.3 m) "warehouse" barge to Maybank Navigation Co. of Charleston, S.C. With interior space measuring 280 x 73 x 27 ft. (85.3 x 22.2 x 8.2 m), Helen III can transport 7,200 metric tons of cargo on a 15 ft. (4.5 m) draft.
The vessel houses two MacGregor hydraulic ramps enabling efficient RoRo operations. The barge's wide doors, which measure 22 x 18 ft. (6.7 x 5.4 m), allow for the transmission of cargo that is normally too wide for door openings to be off-loaded from large trucks inside the warehouse barge
Helen III's unique-styled warehouse roof is secured to ABS watertight bin walls and is constructed of lightweight PVC-coated Kevlar material produced by Rubb Manufacturing Co., designed to withstand 110-plus knot winds in any sea conditions.Two Marathon generators each driven by a Detroit Diesel 6-71 engine developing a total of 120 kW provide power for the barges' blowers, ventilation and lighting systems. A Quality Power switchboard monitors the engines.