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A Morse code light is light in which appearances of light of two clearly different durations (dots and dashes) are grouped to represent a character or characters in the Morse Code. For example, "Mo(A)" is a light in which in each period light is shown for a short period (dot) followed by a long period (dash), the Morse Code for "A".
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 ...
The boat displaces 365 lb (166 kg). [1] [3] The boat has a draft of 3.83 ft (1.17 m) with the centreboard extended and 0.67 ft (0.20 m) with it retracted, allowing beaching or ground transportation on a trailer. [1] A motor bracket is a factory option, to allow the boat to be fitted with a small outboard motor for docking and manoeuvring. [1] [3]
The concept is illustrated in Figure 3 (to be uploaded). [3] A diffraction grating breaks the incoming light into a spectrum. A software controlled binary liquid crystal stack, individually tilts each optical channel and a second grating (or a second pass of the first grating) is used to spectrally recombine the beams.
A rotary switch is a switch operated by rotation. These are often chosen when more than 2 positions are needed, such as a three-speed fan or a CB radio with multiple frequencies of reception or "channels". A rotary switch consists of a spindle or "rotor" that has a contact arm or "spoke" which projects from its surface like a cam.
The PEL sector light produces 3.5 million candela and is visible for 10 nautical miles (18.5 km) by day. The beam with 3 colors is narrow at 1.6°. [ 5 ] This was required because the PEL sector light was built over 7NM (13 km) from the atoll entrance and it had to illuminate a safe entrance which is only 228 meters wide.
1. (ship's boat) A small, light boat propelled by oars or a sail, used as a tender to larger vessels during the Age of Sail. 2. (full-rigged pinnace) A small "race built" galleon, square-rigged with either two or three masts. 3. In modern usage, any small boat other than a launch or lifeboat associated with a larger vessel. pintle
The procedure is to turn the vessel into the wind with the hind-most fore-and-aft sail (the spanker), often pulled to windward to help turn the ship through the eye of the wind. The main (and often mizzen) sails are braced around onto the new tack as the ship approaches the eye of the wind.