Richard Steffy The glossary is primarily relevant to the first two sections of this handbook and is not meant to be representative of the entire field of maritime archaeology. As an independent contribution, it is an exquisite source of information on ship construction terminology, but also a testament to the work of the late Mr. Steffy, whose influence has been instrumental to the understanding of wooden ship building and the interpretation of shipwrecks and archival material. Words set in bold type are defined elsewhere in the glossary. Entries have been illustrated wherever possible, either within the glossary or in the text. Alternate terms or spellings are listed in brackets after the entry. Alternate definitions for a single entry are commonplace; this is the result of diffusion, varying localities, and technological progress.
This is a partial glossary of nautical terms ; some remain current, while many date from the 17th to 19th centuries. See the Further reading section for additional words and references. Also able-bodied seaman. Also accommodation hulk. Also sterncastle.
in order that the vessel may not tip, No. The next important point is that of lifting, when th buoyancy aft becomes so great that the vessel lifts At the present date there are many systems in vogue, but in the merchant service we may divide.
The present invention relates to a marine speed nozzle which is positioned around the propeller of a ship and is hydrodynamically structured so that it maximizes the thrust provided by the propeller at lowers speeds, while also increasing the free running speed of the vessel. The most common propulsion mechanism used for cruise ships, tankers, freight carriers, steamships, cargo vessels, loading barges, tugboats, and other large marine vessels is the radiating blade propeller.
The propeller, which basically is a hub surrounded by a plurality of fan-like blades, is typically located under the rear or aft end of a ship and its rotation accelerates water towards the rear of the ship to effectuate the primary means of driving and maneuvering the vessel. Those skilled in the art relating to marine propulsion devices have realized that the propulsion efficiency of a ship’s propeller may be increased by carefully channelling the incoming water flow to a ships propeller and similarly directing the accelerated water flow efficiently as it leaves the back of the propeller.
In the past, various types of conical enclosures or nozzles have been fashioned in an attempt to increase the performance of the ships propeller. Essentially, a conical enclosure or nozzle surrounds the propeller in a longitudinal direction and directs an optimal amount of water flow into the propeller. The principles of fluid dynamics dictate that the volume of water flowing into the propeller will equal the volume of water flowing out. As such, the diameter of the nozzle is reduced as the water flows rearward and out of the nozzle.
Since the volume of water exiting must equal the volume that enters the nozzle, the water flow accelerates as it travels through the nozzle and thereby provides additional thrust to the ship which cannot be achieved by the propeller alone. The additional thrust is demanded by cargo ships, tugboats, freightliners, aircraft carriers, and similar marine vessels which must carry substantial loads or tow heavy cargo while operating at low speeds.
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Through its Smart Marine Ecosystem vision, Wärtsilä has pointed the way to a maritime most up-to-date charts and publications; rotating flow aft of the propeller blades. Impeller tip clearance guaranteed due to axial shape and no risk of.
This publication was produced by the Maine Department of Marine Resources under appropriation 13A PDF files may require Adobe Reader software download here free to view or print. Please contact DMR at or at the address below if you need a printed copy mailed to you. When one thinks about the State of Maine, lobsters come to mind. Its mission is to conserve and develop marine and estuarine resources; to conduct and sponsor scientific research; to promote and develop the Maine coastal fishing industries; to advise and cooperate with local, state, and federal officials concerning activities in coastal waters; and to implement, administer, and enforce the laws and regulations for these enumerated purposes.
This web page provides information about the history of lobstering, the biology of the lobster, conservation practices, and laws and rules pertaining to the fishery in the State of Maine. The answer sheet to the test must be completed and returned along with an application and the required fees to the address listed above. Information can also be obtained at the following websites: www.
Laws and rules are routinely subject to change.
Send Enquiry View Full Details. Home About Contact Blog Login. Amazing Buy! Ready to go! New Zealand built 26m 84ft Luxury Pilothouse Yacht. A buyer should instruct their agents, or their surveyors, to investigate such details as the buyer desires validated.
The Marine Safety Branch of the Department of Transport is Expiry dates must be adhered to for the following ahead of the boat to just aft of the beam.
A point beyond the mid-point of a ship’s length, toward the stern relative to an object or point of reference ‘abaft the fore hatch’. Further aft than the beam: a relative bearing of greater than 90 degrees from the bow: ‘two points abaft the port beam’. Some modern references claim that AB stands for able-bodied seaman as well as, or instead of, able seaman.
Able seaman was originally entered using the abbreviation AB instead of the more obvious AS in ships’ muster books or articles. Such an entry was likely to avoid confusion with ordinary seaman OS. Later the abbreviation began to be written as A. The correct term, able seaman, remains in use in legal documents, in seaman’s papers, and aboard ship. An Able Seaman also AB is an unlicensed member of the deck department of a merchant ship.
An AB may work as a watch-stander, a day worker, or a combination of these roles. On or in a vessel see also ‘close aboard’. Referring to cargo being put, or laden, onto a means of transport. This is a special pennant flown to indicate the absence of a commanding officer, admiral, his chief of staff, or officer whose flag is flying division, squadron, or flotilla commander. The bearing of an object in relation to North.
Thanks to GPS we can now be a bit more accurate. But like any aid or technique, GPS cannot do all the work for us especially as its positions can be more accurate than charts themselves.
Waterfowl Reports and Surveys · Take Someone Hunting · Quota Hunts · Season Dates One may use marine channel 16 to contact a local marina. Registration decals are to be placed within six inches behind (aft) and in line with the Horsepower limits on several lakes changed after publication of the print guide.
Your sailing experience has given you the opportunity to participate in different types of work on board- from tank sounds, ship maintenance and deck work to berthing and unberthing, pilotage operations, and port and cargo operations. This chapter will focus on the officers’ duties on the bridge and the different roles of the navigational watch as well as the equipment used.
After working with this, you should be able to describe the roles and duties of the navigational watch and the equipment used. Good seamanship and the importance of accurate communication in English are emphasised throughout the chapter. It is the shipping company’s responsibility to ensure that all crewmembers in the company’s fleet meet the requirements. The regulation for navigation and navigational aids for ships and mobile offshore units Norwegian Maritime Authority , applies to all Norwegian cargo ships and recreational crafts of 24m LOA, passenger ships, mobile offshore units and barges.
You can read the regulations here. How a vessel is manned is critical to its successful operation. The safe operation of a ship is just as dependent on the competence and actions of the crew as it is on the physical state of the ship. When out at sea, it is crucial that the crew’s combined competence covers everything from navigating the vessel in all kinds of weather, maintaining radio contact, and cargo handling to treating crewmembers that have been injured and, in such an event, even fighting fires.
The crew is divided in different departments, each with an officer that reports to the captain. Below, you see an example of the ranking on board a somewhat larger vessel:. The size of the departments and the number of management levels on board a vessel is dependent on the ship’s type, size and cargo.
Finally, the loop is completed along the Gulf Coast Intracoastal Waterway. It is a trip of a lifetime! The burgees feature three different colored backgrounds.
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A happy captain yes the author is smiling inside! I expect that, like most skippers, you leave a standing order when you go off watch that you are to be called for almost anything. You can help them by making a point of being positive and jolly whenever you turn out for a shout. Even if the ship in question is five miles off and heading away from you, make the right noises, have a mug of tea and then potter off back to your bunk.
The down side to jacklines—catching on battens. I had only myself to blame for this. I guess I know what my next job is! I guess I know what my next job is. The photo above is of a bight in a furling line—heavily loaded some of the time.