Service vessel operating method

Details Service vessel operating method Service vessel operating method

1998-07-30

2000-05-16

Basinger, Sherman

Marine propulsion

Screw propeller

Having means to control flow around propeller

114 40, 440 50, B63H 128, B63H 300, B63H 514

Patent

active

060629258

ABSTRACT:
A service vessel that is designed for navigating both in the open sea and in ice conditions is provided with a demountable propeller nozzle. For an ice-free navigation period the propeller nozzle is mounted around the propulsion propeller of the vessel, whereas for a navigation period in ice conditions the propeller nozzle is removed. The power absorption of the propulsion propeller is maintained constant during nozzle and nozzle-free operation.

REFERENCES:
patent: 4427393 (1984-01-01), May
patent: 4550673 (1985-11-01), Ingvason
patent: 5101128 (1992-03-01), Veronesi et al.
LARADI KESAPAIVAT (document 1), R. Jarvinen, Aug. 21, 1992, pp. 1-3 (translation enclosed).
LARADI KEAPAIVAT (document 2), P. Salmi, Aug. 14, 1992, pp. 1-3 (translation enclosed).
LARADI KESAAPAIVAT (document 3), "Azimuthing Electric Propulsion Electric Propulsion Drive Azipod" published by Kvaerner Masa-Yards Oy and ABB Marine (ABB Stromberg Drives Oy).

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