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Today, larger ships are placed in dry dock; [5] smaller vessels can be lifted from the water by a crane or a travel lift. A procedure known as careening is still sometimes done with smaller boats, but differs from what was done historically in that the boat is not winched over by cables attached to the mast.
In many modern boats, the heads look similar to seated flush toilets but use a system of valves and pumps that brings sea water into the toilet and pumps the waste out through the hull (in place of the more normal cistern and plumbing trap) to a drain. In small boats the pump is often hand operated.
In-water cleaning, also known as in-water surface cleaning, is a collection of methods for removing unwanted material in-situ from the underwater surface of a structure.. This often refers to removing marine fouling growth from ship hulls, but also has applications on civil engineering structures, pipeline intakes and similar components which are impossible or inconvenient to remove from the ...
The bilge pump was an improvement on the first hydraulic pumps used in antiquity: force pumps. Invented around the early 3rd century BCE, the most primitive design of a force pump consisted of a piston pushing water out of a tube, constructed by soldering individual bronze elements (Stein 246).
A bilge pump is a water pump used to remove bilge water. Since fuel can be present in the bilge, electric bilge pumps are designed to not cause sparks. Electric bilge pumps are often fitted with float switches which turn on the pump when the bilge fills to a set level. Since bilge pumps can fail, use of a backup pump is often advised. The ...
2. The mizzen sail is the lowest sail set on the mizzen mast. This is normally a fore-and-aft sail. Where a lower square sail is set on the mizzen, it is called a cro'jack to differentiate from a sail such as a spanker [11] 3. A mizzen staysail is a fore-and-aft sail set in front of the mizzen mast [12] mole
C&C Yachts was a builder of high-performance fiberglass monohull sailboats with production facilities in Canada, Germany, and the United States. [1] C&C designed and constructed a full range of production line cruiser-racer boats, as well as custom one-off and short production run racing and cruising boats.
The chain pump is type of a water pump in which several circular discs are positioned on an endless chain. One part of the chain dips into the water, and the chain runs through a tube, slightly bigger than the diameter of the discs. As the chain is drawn up the tube, water becomes trapped between the discs and is lifted to and discharged at the ...