![merchant ship construction pursey pdf merchant ship construction pursey pdf](https://mdnautical.com/25532-home_default_2x/elements-of-modern-ship-construction-by-david-j-house.jpg)
It is the plate laid in the horizontal direction.
Merchant ship construction pursey pdf skin#
Or we can can that bottom shell plating form the watertight skin of the bottom of the ship.
![merchant ship construction pursey pdf merchant ship construction pursey pdf](https://www.coursehero.com/thumb/a4/f3/a4f3449db398cf4c7133e48c259186839e4d9b58_180.jpg)
I am so much sure that you already would know what these two terms mean.īottom shell plating is the shell plating on the bottom part of the ship. We can further divide this area in two broad parts, which is So when we say shell plating, it is a huge area. Ship construction requires us to be able to pin point each component. One of the main purpose of shell plating is to provide watertight skin of the ship. Apart from that it also adds to the longitudinal strength of the ship. So shell plating is whatever we see on outer side of the ship. The dictionary meaning of the shell is “hard outer covering”. Shell plating is the steel plate used on the shell of the ship. In this case it is too obvious from the name. Like see below the keel laying of cruise ship “Anthem of the seas“.Īgain when we say shell plating, we are referring to a steel plate. Nowadays keel laying is considered to be the time when first piece of the ship structure is placed on the the wooden blocks. See below the keel of the titanic being laid. Years back keel laying involved actually laying the keel of the ship on the blocks. We can consider the keel of the ship as the backbone or spine of the ship. This area need more strengthening because the ship sits on this area on the blocks, during construction as well as during dry docks. So keel is the steel plate with slightly more thickness than the other adjoining plates on its sides. Keel laying also has the importance with respect to many IMO conventions as this is the date construction of the ship starts. Because of this, laying the keep is considered to be the time when construction of the ship begins. Keel of the ship is the bottom most plate of the ship laid along the entire length of the ship.ĭuring construction of the ship this is the first thing that is placed on the blocks. Though it can also be in the form of steel bar but it is very rare these days. When we say “Keel of the ship”, we are referring to a steel plate.
![merchant ship construction pursey pdf merchant ship construction pursey pdf](https://vdoc.pub/img/crop/300x300/64ggqi8glef0.jpg)
But we have to understand that all these structure will be a form of plate, bar or beam. Now that we know the shapes and structure of the steel used in ship construction, we can discuss the ship construction terms. Shape of the beams are not limited to these ones. SI shaped beams are I-shaped beams with slight curved cross section. Beams can be categorized by many types but from point of ship construction, we need to categorize it through cross sectional shape.įor example, there are L-Shaped beams, C-shaped beams, I-shaped beams and SI-shaped beams. This table gives a fair idea what cross section of a steel can be called a plate/sheet or a bar.Ī beam is a structural element that increases load bearing capability and avoid bending of the structure.
![merchant ship construction pursey pdf merchant ship construction pursey pdf](https://reader020.staticloud.net/reader020/html5/20191006/546ac417b4af9f892c8b4871/bg1.png)
The steel bar has lesser cross sectional width than the steel plate. There is only one principle difference between steel plate and steel bar. The most common place you can see the plate in ship construction is the main deck and side of the ship. It is a rectangular shape steel with certain thickness. I mean what shape of steel ?īefore learning anything about ship construction we need to know the shapes used in ship construction. But what all forms of steel are used in building ships. Ships are made of steel and we all know that. In this post I will discuss and explain 10 basic terms used in ship construction.īut before we do that, first lets discuss briefly what ship is made of. The first step of studying the ship construction need to be knowing about the basic terms of ship constructions. Only problem is ship construction topics starts from the medium level and not from the basic level.įor example if we need to draw the construction of double bottom, learning just involves placing each component at its place without answering why. We read about ship construction during our competency exams. Same applies to the other parts of the ship too. It is only possible if you can identify the structures inside the ballast tank.
Merchant ship construction pursey pdf crack#
For example if you see a crack in ballast tank, you should be able to tell exactly where the crack is. But that does not mean that they need not know anything about it. A seafarer may not be involved in the ship construction so much.