Harbormaster BT-550 Bow Thruster

Name: Harbormaster BT-550 Bow Thruster
Brand: Harbormaster Marine

Harbormaster BT-550 tunnel thruster: 1200 rpm input, 60-inch four-blade manganese bronze Kaplan propeller, min. 13,500 lbs thrust at 474 rpm; spiral bevel gears, made in USA.

Description

The Harbormaster BT-550 is a tunnel (bow/stern) thruster consisting of a right-angle gear set, watertight pod (gear case), pod supporting structure, propeller and corrosion-resistant steel tunnel. All material is manufactured and assembled in the USA.

Technical data

Input speed: 1200 rpm (horizontal or vertical input)
Propeller: 60-inch four-blade manganese bronze Kaplan type, maximum 474 rpm
Thrust: not less than 13,500 lbs at maximum propeller speed
Spiral bevel gears, lapped matched set, AGMA quality 8-10
Forged steel pinion and propeller shafts on tapered roller bearings
Mechanical propeller shaft seal
Pod-to-tunnel diameter ratio not exceeding 3:1
Lubrication by oil immersion with 10-gallon static lube oil tank, mounted at least 10 ft above the load waterline
Abrasion and corrosion resistant rolled steel tunnel with welded chill rings for distortion control and alignment of shipyard-fitted extensions
Warranty: 12 months

Konrad Stern Drive Product Line (500, 600 and 600B Series)

Konrad Marine 500, 600 and 600B series stern drives for working and high-speed boats: models 520, 540, 560, 620, 660, 680, 620B, 660B and 680B.

System / Package

R.W. Fernstrum

OMEGA Reinforced Laser Plate Banks for Cargo Hold Heating

Structurally reinforced stainless laser-plate heat-exchanger banks that replace failing pipe coils in barge and tanker cargo holds — built to survive sloshing loads in part-filled tanks while heating crude oil, caustic soda and other cargoes.

Equipment

Caterpillar Marine

Cat C2.2 Marine Generator Set

Compact 4-cylinder 2.2 L diesel marine genset, 15-25 ekW at 1500/1800 rpm (50/60 Hz), U.S. EPA Tier 3, available open or enclosed with heat exchanger or keel cooling.