Repowering a Head Boat With Cummins QSK19s

Thursday, March 02, 2000
The years just prior to the early 1980s collapse in the Gulf of Mexico oil industry saw the building of a large number of crew boats in the 110-ft. range. While a number of these boats remain in the Gulf, many have found their way to other coasts and other applications. In Charleston, S.C., Stuart Reeves has converted two of the vintage vessels to "head boats" to take groups of sport fishermen out into the Atlantic Ocean for 11-hour trips. The converted boats are certified for up to 154 passengers at distances more than 100 miles offshore. "These boats are well suited to the conversion," Reeves explains, "They are good sea boats with a low centre of gravity and they are already certified for passengers. Because they were built as work boats they are heavier construction than some head boats built on a pleasure boat hull." But the conversion leads to a shift in a vessel's power-to-weight ratio. Reeves' company, Starfleet Marine Transport, also serves the oil industry with a fleet of five 125 and 150-ft. crew boats out of Theriot, La. When he converted a 1980-built 110-ft. vessel to a head boat in 1995, he had the work done at Superior Shipyards in Golden Meadow, La. "We added about 42,000 pounds of aluminum, seating and additional facilities," he says, "As a result the boat was underrated and lost two or three knots off its former 21-knot speed. " The boat's existing power was three 600 hp two-cycle V-12 engines. Reeves is now replacing these with three of Cummins electronic six-cylinder QSK19 engines rated at 760 hp each for a combined 2,280 hp. "With these engines we will also significantly increase our torque at the shaft," Reeves explains, "Because they are a longer stroke inline engine than the V-configured engines that we are taking out, we have matched them to ZF IRM350a gears with a down angle of about seven degrees to lower the front of the engine." While the conversion to head boat cost the boat two or three knots of speed, Reeves is hoping to gain as much as five knots with the increased power and torque. For owners of converted oil field boats that have found new homes in every corner of the marine world, this will be a project worth following.
Maritime Reporter October 2013 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Finance

Norvestor to Become PG’s Largest Shareholder

Norvestor VI, L.P., a fund advised by Norvestor Equity AS, announced it has signed an agreement to invest in Ing Per Gjerdrum AS including its subsidiaries PG Hydraulics AS and PG Construction AS.

GasLog Closes First Option Vessels Dropdown

GasLog Ltd.  announced today the closing of the sale of two modern liquefied natural gas (“LNG”) carriers, the Methane Jane Elizabeth and Methane Rita Andrea,

Brent Holds Above $97, Eyes Worst Quarter Since 2012

Brent crude futures hovered above $97 a barrel on Tuesday, aided by firm U.S. and Chinese data, but the oil benchmark was on track for its deepest quarterly drop

 
 
Maritime Contracts Maritime Security Maritime Standards Naval Architecture Navigation Pipelines Port Authority Ship Electronics Ship Repair Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.6498 sec (2 req/sec)