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61Lift-to-drag ratio — In aerodynamics, the lift to drag ratio, or L/D ratio ( ell over dee in the US, ell dee in the UK), is the amount of lift generated by a wing or vehicle, divided by the drag it creates by moving through the air. A higher or more favorable L/D… …
62Sevmorput — See also: Northern Sea Route Sevmorput in 2007 while docked at Atomflot, Murmansk alongside nuclear powered icebreaker NS Sibir (cropped away) Sevmorput (Севморпуть) is a Russian nuclear powered cargo ship with ice breaking abilities, one of only …
63USS Sapelo (AO-11) — USS Sapelo was laid down on 3 May 1919 for the United States Shipping Board by the Newport News Shipbuilding and Dry Dock Co., Newport News, Va.; launched on 24 December 1919; transferred to the Navy on 30 January 1920; and commissioned on 19… …
64Schleicher ASW 15 — NOTOC The ASW 15, designed in 1968 by Gerhard Waibel and built in series by Schleicher, is a glass composite sailplane, with shoulder mounted wings and all flying tailplane. The placement of its single tow release is a compromise between the… …
65Glaser-Dirks DG-500 — DG 500 A DG 505 ridge soaring in Pennsylvania U.S.A. Role Two Seater Class sailplane …
66Ronald Bussink — Roue de Paris, a Bussink R60 transportable wheel, pictured at Geleen in the Netherlands in 2005 …
67Submarine — For other uses, see Submarine (disambiguation). A Japan Maritime Self Defense Force Oyashio class submarine in 2006 A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which… …
68Marine 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… …
69railroad — /rayl rohd /, n. 1. a permanent road laid with rails, commonly in one or more pairs of continuous lines forming a track or tracks, on which locomotives and cars are run for the transportation of passengers, freight, and mail. 2. an entire system… …
70Caribbean Sailing Yachts — Caribbean Sailing Yachts, also known as CSY, are heavy displacement recreational sailboats built during the 1970s and 1980s in Tampa, Florida. CSY went out of business in the early 1980s; however, the well founded boats have continued to sail the …
