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MacGregor steel hatch cover Robert MacGregor was a British engineer , who, during the 1920s, concerned over unnecessary losses of North Sea colliers , developed the first steel hatch cover. The design was simple and consisted of five articulated leaves that stowed neatly at the end of each hatch.
Butterworth hatches are not the main access hatches, but are the servicing hatches, and are generally closed with a metal cover plate with a gasket that is fastened to the deck by a number of bolts which stick up from the deck. Holes on the edges of the plate fit over these bolts and the cover is fastened down with nuts or dogs.
Most cargo hatches have a coaming, a raised edge around the hatch, to help keep out water. The term batten down the hatches is used prepare the ship for bad weather. This may included securing cargo hatch covers with wooden battens, to prevent water from entering from any angle. The term cargo hatch can also be a used for any deck opening ...
Hatch coaming (bottom right) on a bugeye. Coaming is any vertical surface on a ship designed to deflect or prevent entry of water. It usually consists of a raised section of deck plating around an opening, such as a cargo hatch. Coamings also provide a frame onto which to fit a hatch cover.
Hatch Mott MacDonald was founded in 1996 by its parent companies, Hatch Ltd and Mott MacDonald. [2] HMM was intended to take advantage of engineering opportunities in North America. HMM originally provided the bulk of its services in transportation, including the design of tunnels, rail systems, bridges, highways, and airport infrastructure.
Tender Attached rail vehicle that holds both water for the boiler and fuel such as wood, coal, or oil. [1] [2] [3]: 80 Cab (US+ and UK+) Footplate (UK+) Compartment where the engineer (US+) / driver (UK+) and fireman control the locomotive and tend the steam supply and firebox.