Page 18: of Maritime Reporter Magazine (January 1984)
Air Ride Express (continued from page 18) president Donald E. Burg, allows surface effect technology to be uti- lized at lower construction and maintenance costs.
During sea trials the new ves- sel, which has a dry weight of 60,000 pounds, operated at 30 knots with a payload of 25,000 pounds including fuel. With a payload of 35,000 pounds, the boat ran at 27 knots. It has operated in following and cross seas up to 10 feet and in head seas of 5 feet at speeds in the 25-knot range with good passen- ger comfort. It has a capacity for 32 passengers and a two-man crew in air conditioned or heated ac- commodations. The cargo deck aft has an area of more than 400 square feet.
Key Power, Inc. of Miami sup- plied the engines, which include two GM Detroit Diesel 12V71TI diesels for main propulsion and a
GM Detroit Diesel 6V53T engine to power the blower system. The main engines turn 34- by 44-inch
Columbian propellers through Twin
Disc 514 reduction gears having a ratio of 2.5:1. Fuel consumption is about 50 gallons per hour, giving the boat a normal operating range of 750 miles.
The Air Ride Express is the cul- mination of a three-year research and development effort conducted mm. • m jrarvr by Air Ride Marine. The Miami company is currently working on the detailed design for a 50-knot, shallow-draft patrol boat; a 110- foot crew/supply vessel, and a 120- passenger ferry.
AIR RIDE EXPRESS
Main engines (2) GM Detroit
Lift engine GM Detroit
Reduction gears (2) Twin Disc
Propellers (2) Columbian
Generator engines Perkins
Engine controls Morse
Steering system Hynautic
Fuel filters Racor
Loran C Si-Tex/Koden
SSB radio Raytheo
VHF radio Motorola
Depth sounder Datamarine
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General Dynamics Photo
Iowa Marine Shipyard
Iowa Marine Shipyard of Keo- kuk, Iowa, has delivered the tow- boat Blanche V to Gibbons Marine of Beardstown, 111. She is an IM-60
Class vessel with an overall length of 60 feet, beam of 24 feet, depth of 8 feet and draft of 6 feet. Propul- sion is by twin Cummins KTA- 1150-M diesel engines with a total output of 940 bhp at 1,800 rpm.
These drive 64- by 50-inch Kah- lenberg stainless steel propellers through Twin Disc MG-518 reduc- tion gears with a 6:1 ratio.
Generators are 30-kw Lima-Mac driven by John Deere 4219 diesels.
Iowa Marine president Tom Ed- wards says, "One of the things we have always attempted to do is provide equipment that is easily serviceable, and this John Deere engine is an old-line, widely used engine. Parts and service are available in just about every town where there is a John Deere dealer."
Steering is an Iowa Marine de- sign, mechanical over hydraulic, full follow-up with each main en- gine driving a hydraulic gear pump.
There are two steering and four flanking rudders, which give the
Circle 116 on Reader Service Card