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2. Radio-controlled boat - Wikipedia

   en.wikipedia.org/wiki/Radio-controlled_boat

   By changing the position of the two joysticks on the transmitter signals are sent over two separate channels on a single radio frequency (assigned to the individual boat/operator). On the boat, the radio receiver is connected to two battery-powered electric motors or servos. Signals from the radio transmitter are interpreted by the radio ...

3. Navigation light - Wikipedia

   en.wikipedia.org/wiki/Navigation_light

   Watercraft navigation lights must permit other vessels to determine the type and relative angle of a vessel, and thus decide if there is a danger of collision. In general, sailing vessels are required to carry a green light that shines from dead ahead to 2 points (22 + 1 ⁄ 2 °) abaft [note 1] the beam on the starboard side (the right side from the perspective of someone on board facing ...

4. Electric boat - Wikipedia

   en.wikipedia.org/wiki/Electric_boat

   An electric boat is a powered watercraft driven by electric motors, which are powered by either on-board battery packs, solar panels or generators. [ 1 ] While a significant majority of water vessels are powered by diesel engines , with sail power and gasoline engines also popular, boats powered by electricity have been used for over 120 years.

5. Marine propulsion - Wikipedia

   en.wikipedia.org/wiki/Marine_propulsion

   V12 marine diesel engines . Human-powered paddles and oars, and later, sails were the first forms of marine propulsion. Rowed galleys, some equipped with sail, played an important early role in early human seafaring and warfares. The first advanced mechanical means of marine propulsion was the marine steam engine, introduced in the early 19th ...

6. How to Buy a Dive Watch - AOL

   www.aol.com/lifestyle/buy-dive-watch-184700766.html

   Brands such as TAG Heuer make battery-operated watches powered by light, and others make conventional quartz divers. So long as it’s easy to tell that the watch is operating underwater, it doesn ...

7. Trolling motor - Wikipedia

   en.wikipedia.org/wiki/Trolling_motor

   A trolling motor is a self-contained marine propulsion unit that includes an electric motor, propeller and control system, and is affixed to an angler's boat, either at the bow or stern. A gasoline-powered outboard used in trolling, if it is not the vessel's primary source of propulsion, may also be referred to as a trolling motor.