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2. Boat building - Wikipedia

   en.wikipedia.org/wiki/Boat_building

   Boat building is the design and construction of boats (instead of the larger ships) — and their on-board systems. This includes at minimum the construction of a hull , with any necessary propulsion, mechanical, navigation, safety and other service systems as the craft requires.

3. 19-inch rack - Wikipedia

   en.wikipedia.org/wiki/19-inch_rack

   DIN 41494-8 Components on front panels; mounting conditions, dimensions; DIN IEC 60297-3-100 (see above in IEC section) A rack's mounting fixture consists of two parallel metal strips (also referred to as posts or panel mounts) standing vertically. The posts are each 0.625 inches (15.88 mm) wide, and are separated by a gap of 17.75 inches (450. ...

4. Sponson - Wikipedia

   en.wikipedia.org/wiki/Sponson

   In the mid-1990s, advances in sponson design made sponsons a tool for better handling at high speeds, and they began being added to racing boats. [ 2 ] There are essentially three types of sponsons for watercraft available on the market today – the basic block type, the hooked or winged type, and the paddle or rudder type.

5. Dorade box - Wikipedia

   en.wikipedia.org/wiki/Dorade_box

   The grey area indicates the deck of the boat. A dorade box (also called a dorade vent , collector box , cowl vent , or simply a "ventilator") is a type of vent that permits the passage of air in and out of the cabin or engine room of a boat while keeping rain, spray, and sea wash out.

6. Tool board - Wikipedia

   en.wikipedia.org/wiki/Tool_board

   The tools are often hanged onto the tool board via hooks, screws, cane holders or other types of tool holders, and these are often attached to the board through pegs. [ 2 ] Compared to a toolbox or tool cart, a tool board can give a better overview so that it is easy to find the needed tools for a job. [ 2 ]

7. Navigational instrument - Wikipedia

   en.wikipedia.org/wiki/Navigational_instrument

   Marine chronometer used to determine time at the prime meridian with great precision which is necessary when reducing sights in celestial navigation. Nocturnal used to determine apparent local time by viewing the Polaris and its surrounding stars. Ring dial or astronomical ring used to measure the height of a celestial body above the horizon ...