to have no ballast
41Oil tanker — Supertanker redirects here. For the aerial firefighting aircraft, see Evergreen 747 Supertanker. The commercial oil tanker AbQaiq, in ballast Class overview Name …
42Gliding competition — Competition grid at 2004 UK Standard Class Nationals, Aston Down Some of the pilots in the sport of gliding take part in gliding competitions. These are usually racing competitions, but there are also aerobatic contests and on line league tables …
43Ship — A ship IPA|/ʃɪp/ audio|en us ship.ogg|Audio (US) is a large vessel that floats on water. Ships are generally distinguished from boats based on size. Ships may be found on lakes, seas, and rivers and they allow for a variety of activities, such as …
44USS Thresher (SSN-593) — The second USS Thresher (SSN 593) was the lead ship of her class of nuclear powered attack submarines in the United States Navy. Her loss at sea during deep diving tests in 1963 is often considered a watershed event in the implementation of the… …
45Rail transport — Railroad and Railway both redirect here. For other uses, see Railroad (disambiguation). Rail transport is the conveyance of passengers and goods by means of wheeled vehicles specially designed to run along railways or railroads. Rail transport is …
46Vasa (ship) — Vasa (or Wasa ) [The original name of the ship was Wasen / Wassen ( The Sheaf ), after the sheaf in the coat of arms of the House of Vasa, which was also part of the coat of arms of Sweden at the time. Vasa has since become the most widely… …
47R101 — infobox Aircraft name = R101 type = Airship manufacturer = Royal Airship Works caption = designer = V.C. Richmond first flight = 4 October 1930Clarifyme|date=June 2008 introduction = retired = status = primary user = more users = produced =… …
48Metal halide lamp — Metal halide lamps, a member of the high intensity discharge (HID) family of lamps, produce high light output for their size, making them a compact, powerful, and efficient light source. Originally created in the late 1960 s for industrial use,… …
49Electrodeless lamp — In contrast with all other electrical lamps that use electrical connections through the lamp envelope to transfer power to the lamp, in electrodeless lamps the power needed to generate light is transferred from the outside of the lamp envelope by …
50Marine pollution — While marine pollution can be obvious, as with the marine debris shown above, it is often the pollutants that cannot be seen that cause most harm. Marine pollution occurs when harmful, or potentially harmful effects, can result from the entry… …
