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2. Director-class tugboat - Wikipedia

   en.wikipedia.org/wiki/Director-class_tugboat

   The Director class was a class of diesel-electric paddle tugboats ordered by the British Admiralty's Royal Maritime Auxiliary Service and constructed in 1957–1958. [3] [2] Each paddle wheel was driven by an individual electric motor, giving outstanding manoeuvrability. Paddle tugs were able to more easily make use of the inherent advantage of ...

3. DEPV Talisman - Wikipedia

   en.wikipedia.org/wiki/DEPV_Talisman

   Talisman was the world's first diesel electric paddle vessel. [3] [1] Built by A. & J. Inglis in 1935 for the London and North Eastern Railway, she was a replacement for their 1896 PS Talisman. The new vessel's revolutionary engines gave considerable trouble, resulting in a sudden withdrawal at the peak of the 1939 season.

4. Sail switch - Wikipedia

   en.wikipedia.org/wiki/Sail_switch

   A sail switch, vane switch or flow switch is a mechanical switch that is actuated on or off in response to the flow or non-flow of a fluid such as air or water. [1] A sail switch typically operates through the use of a paddle or a diaphragm which gets displaced due to the force of fluid or air moving past it.

5. Marine propulsion - Wikipedia

   en.wikipedia.org/wiki/Marine_propulsion

   Rotation of the paddle wheel produces thrust, forward or backward as required. More advanced paddle wheel designs have featured feathering methods that keep each paddle blade oriented closer to vertical while it is in the water; this increases efficiency. The upper part of a paddle wheel is normally enclosed in a paddle box to minimize splashing.

6. List of How It's Made episodes - Wikipedia

   en.wikipedia.org/wiki/List_of_How_It's_Made_episodes

   Electrical switches: Thai fish sauce: Capers: July 18, 2016 27-11 349 Mortars and pestles: Bowling lane conditioners Crematories: Wood playsets: July 25, 2016 27-12 350 Race car oil tanks Plaster mouldings: Lemongrass oil: Fly tying vises August 8, 2016 27-13 351 Coconut shell charcoal Dial indicators: Wet downdraft tables: Bassoon reeds ...

7. Mercury relay - Wikipedia

   en.wikipedia.org/wiki/Mercury_relay

   They are used as high-current switches or contactors, where contact erosion from constant cycling would be a problem for conventional relay contacts. Owing to environmental considerations about the toxicity of mercury , mercury relays are mostly obsolete, though modern encapsulated units still have applications.