Marine Engineering and Naval Architecture

Scantling Length (L) L is the distance in meters (feet) on the summer load line from the fore side of the stem to the centerline of the rudder stock. For use with the Rules, L is not to be less than 96% and need not be greater than 97% of the extreme length on the summer load line. The forward end of L is to coincide with the fore side of the stem on the waterline on which L is measured. Freeboard Length (Lf) Lf is the distance in meters (feet) on a waterline at 85% of the least molded depth measured from the top of the keel from the fore side of the stem to the centerline of the rudder stock or 96% of the length on that waterline, whichever is greater. Where the stem is a fair concave curve above the waterline at 85% of the least molded depth and where the aftermost point of the stem is above the waterline, the forward end of the length, Lf, is to be taken at the aftermost point of the stem above that waterline. In ships designed with a raked keel, the waterline on wh...

After having found the equipment numeral from previous blog , the details regarding sizes and quality  may be obtained from the rigging tables provided in these regulations. From these table , we can find the following information The Equipment Letter Stockless bower anchors number of anchor Mass per anchor (kg) Stud-link chain cables for bower anchors Total length (m) Grade and Diameter (mm) of chain CC1———— low  strength. CC2———–medium strength. CC3———–high strength Towline Minimum length (m) Minimum breaking strength (KN) Mooring Lines Number Length of each mooring ropes (m) Minimum breaking strength (KN)

The American Bureau of Shipping is authorized to assign Load Lines to vessels registered in the United States and other countries. Requests for the assignment of Load Lines are to be made on forms which will be furnished by one of the offices of ABS. The center of the ring is to be placed on each side of the vessel at the middle of the length, as defined in the Load Line Regulations. The ring and lines are to be permanently marked, as by center punch, chisel cut or bead of weld. AB American Bureau of Shipping TF Tropical Fresh Water Allowance  F Fresh Water Allowance  T Load Line in Tropical Zones S Summer Load Line  W Winter Load Line  WNA Winter North Atlantic Load Line 

Ships come in various descriptions and have hundreds of thousands of components, but there are a few parts that are common to all ships. In this guide, you can learn about how the basic parts of ships have evolved over the centuries. From floating vessels made of wood to ultra-modern cruise ships, the evolution in design and architecture of ships have come a long way. However there are a few parts that are and will always be common to ships (or rather sailboats or floating vessels) from those that were built 4000 years ago to the newest cruise ships that are nothing less than floating cities. Parts of Ships Common to All Ships Body of the Ship or The Hull: The hull of a ship is responsible for the floatation property of the ship. Generally ships are single hulled (monohull design). It's only other vessels like catamarans (two hulls) and trimarans (three hulls) that have more than one hull to keep it afloat. It is the hull that houses the engines that to which the propel...

If you are going to work in the shipping sector or have a general interest in sailing the seas then you might want to know what different types of ships there are. You may come across a wide range of different vessels and it’s useful to be able to identify them when you are out at sea. It is also important to note that safety regulations vary a lot depending on what type of ship you are operating. Each type of vessel has its own strict regulations that must be followed. Working on each type of ship can also be completely different, so it’s definitely worth doing your research before you apply for a job. For example, working on a fishing vessel is a completely different experience to a cargo ship. Marine industry experts and experienced sailors will have a good idea of the different types of ship. If you are new to the industry then here are some of the main types of international ships that you will probably come across on your travels. 1. Cargo Ships Cargo ships are generall...