A keel is the long fin that comes out of the bottom of the boat. You could make it using any missle shaped object for the botton and a long narrow pice conecting it to the boat itself
If its just turns on a fan you can put th probe in some boiling water and check the contanuity.
Best answer available that I can find so far is from a news article stating:
"Katya's Owners, an American family from the Midwest"
absolute 100% exact in US$ 3000-15000 a month
A yacht is usually a larger recreational vessel (9 or 10 meters or longer), and they can be constructed of various materials. Wood was and still is used, as it fiberglass, and even carbon fiber. Metal is sometimes used, and all the larger yachts are usually made of aluminum or steel.
Remember that a yacht can be quite large, and shipyards have been building them for a long, long time. That means that with the variation in size and in the year of manufacture, different materials will have been used, depending on the objectives of the designer and the marine engineering team.
I am 99% sure its Richard (virgin air ) branson - or at least he used to
It would be dependant on usage but several 10s of thousands per year.
Owner:
John Zigarlic, founder of Nuna Logistics. The builder of the ice roads used in the TV series of THE ICE ROAD TRUCKERS, plus heavy construction in northern Canada (diamond mines etc.).