Vessel with machinery modules outside watertight hull

Marine propulsion – Electric drive for propelling means

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Details

114 65R, B63B 300

Patent

active

054175976

ABSTRACT:
The invention is directed to an improved vessel configuration for high speed ships such as Naval Destroyers. The vessel has a long, slender tumble home (inward-sloped topsides) watertight hull and a deckhouse structurally integral with the watertight hull. All main machinery is modular and outside the watertight hull, freeing midship areas for personnel. Two removable, prealigned and pretested, steerable propulsor modules are attached to the stern after construction and are replaceable pierside. Each propulsor module includes a steerable pod aligned to the water inflow, a steering cylinder, and a streamlined strut connecting the pod to the steering cylinder. Two removable, power modules are mounted above the weather deck in a deckhouse. Each power module includes an intercooled, recuperated gas turbine, a ship-service alternator, and a propulsion alternator. The present vessel provides global range, reduced lightship displacement, reduced cost, superior seakeeping, no seawater ballast, sharper turns and stops, and greatly reduced installed power, fuel consumption, and pollution.

REFERENCES:
patent: 3842782 (1974-10-01), Cuttica
patent: 4308815 (1982-01-01), Conway
patent: 4476797 (1984-10-01), Ivanov et al.
Levedahl, William J., Samual R. Shank and William P. O'Reagan, "DD21A-A Cble, Affordable, Modular 21st Century Destroyer," Carderock Division Naval Surface Warfare Center report CARDINVSWC-TR-93/013 (Dec. 1993).
Levedahl, William J., "A Capable Affordable 21st-Century Destroyer," Naval Engineers Journal, vol. 105, No. 3 (May 1993), pp. 213-223.
Levedahl, William J., "Intergrated Ship Machinery Systems Revisited," Naval Engineers Journal, vol. 101, No. 3, (May 1989), pp. 93-101.
Levedahl, William J., "Integrated Ship Machinery Systems Which Result in Small, Efficient Destroyers," Naval Engineers Journal, vol. 92, No. 2 (Apr. 1980), pp. 271-278.

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