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US 6,516,739 B2Granted
Watercraft
AssigneeVoith Schiffstechnik GmbH & Co. KG
InventorsJens-Erik Bartels, Harald Gross, Dirk Jurgens
Life of this patent
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Abstract
A tugboat with a forwardly-facing rudder and roller at the stern, and a propulsion drive disposed at either the bow or the stem that generates a high transverse force for towing large ships on a desired course. The roller is disposed in an off-flow region aft of the rudder.
Claims9
A tugboat comprising;
- 1.1 a drive (1) which is disposed in a region of a bow of the tugboat;
- 1.2 a roller (3) being provided in a region of a stern of the tugboat, the roller being arranged perpendicularly and held rotatably about its longitudinal axis;
- 1.3 a roller drive being associated with the roller (3);
- 1.4 one or several rudders (2) being provided in a region of a central longitudinal plane or outside of a hull of the tugboat;
- 1.5 the roller (3) being disposed in an off-flow region behind the rudder (2).
2 more elements
Dependencies are inferred from the claim text.