Search results
Results from the WOW.Com Content Network
Before steam tugs became common, sailing vessels would back and fill their sails to maintain a good position in a tidal stream while drifting with the tide in or out of a river. In a modern yacht, motor-sailing – travelling under the power of both sails and engine – is a common method of making progress, if only in and out of harbour.
Barge outfitted with Cranes is towed into position. Marine construction is the process of building structures in or adjacent to large bodies of water, usually the sea. These structures can be built for a variety of purposes, including transportation, energy production, and recreation.
A harbor (American English), or harbour (Australian English, British English, Canadian English, Irish English, New Zealand English; see spelling differences), is a sheltered body of water where ships, boats, and barges can be moored.
Steam tugs were put to use in every harbour of the world towing and ship berthing. Tugboat diesel engines typically produce 500 to 2,500 kW ( ~ 680 to 3,400 hp ), but larger boats (used in deep waters) can have power ratings up to 20,000 kW (~ 27,200 hp) [ citation needed ] .
Ship design work, also called naval architecture, may be conducted using a ship model basin. Previously, loftsmen at the mould lofts of shipyards were responsible for taking the dimensions, and details from drawings and plans and translating this information into templates, battens, ordinates, cutting sketches, profiles, margins and other data ...
The elements of maritime geography are loosely defined and their meanings have changed throughout history. The USA's 2010 Naval Operations Concept defines blue water as "the open ocean", green water as "coastal waters, ports and harbors", and brown water as "navigable rivers and their estuaries". [1]
Table of geography, hydrography and navigation, from the Cyclopaedia of 1728.. Marine navigation is the art and science of steering a ship from a starting point (sailing) to a destination, efficiently and responsibly.
The Admiralty Yard Craft Service was the civilian service which operated auxiliary vessels for the British Admiralty, mainly in HM Dockyards or the vicinity. It was renamed the Port Auxiliary Service (PAS) on 1 October 1958 and the Royal Maritime Auxiliary Service in 1976. The service operated tugs, harbour ferries, launches, and lighters.