Tuesday, December 17, 2013

Jensen Maritime Upgrades Portland Fireboats

Jensen Maritime, the Seattle-based naval architecture and marine engineering division of Crowley Maritime, has completed concept designs and performance specifications for two new fireboats expected to join the City of Portland’s fire and rescue fleet in the first half of 2014.

The new fast-response fireboats are to provide emergency response on long stretches of both the Columbia and Willamette rivers, and are expected to have a 20-year service life, far more than the typical five to seven years found on similar vessels in the class.

Jensen says it designed the two new fireboats with a number of technologically rich elements, including automatic compensation for the recoil from the water cannons and fully integrated controls for fast and agile maneuvering.

The two 54-foot long by 16-foot wide fireboats will be powered by twin MTU 8V2000 M84 engines each rated at 1,085 HP at 2,450 RPM. The twin MTUs will turn ZF 665TS reduction gears and Rolls-Royce FF450S waterjets, which combine to give the vessels a top speed of about 40 knots.

Each vessel’s also designed to have a 3,500 gallons-per-minute fire pump on the front end along with three monitors – two on the bow and one on top of the cabin – and numerous hose connections both forward and aft. A unique integrated hydraulics system with a hydraulic bow thruster will also be featured on the vessels.

Jensen provided the vessels’ design, and Donald L. Blount and Associates produced the final hull form. The boats are being constructed at Portland-based Oregon Iron Works.

Other Jensen Maritime-designed fireboats include a 108-foot fireboat and 50-foot fast-attack fireboat for the Seattle Fire Department; three 40-foot fireboats for the Los Angeles Fire Department; a 40-foot fireboat for the Los Angeles County Fire Department and a 37-foot, 40-knot patrol boat and 44-foot patrol boat for the Seattle Police Department.