welcome to Marine Courses Center today we will discuss ship constructions & ship construction terms & ship structure terminology
ship constructions in different types of ships
General cargo ships
are capable of carrying various general cargo except that specified as special cargo.
cargo liners: which give regular services, sailing fixed schedules.
Trampers: which operate without any fixed time schedules or regular ports of call but which respond to the market situation anywhere in the world
Feature of GC ships
•Compound or transverse framing system
•The ship has a Double bottom
•Divided to cargo holds ( lower hold, tween deck….)
•Provided with derricks, winches, deck crains, and booms
•The ship has a bulwark
Cross Section in General Cargo ship
A vessel designed to carrya different cargo types in bulk state (Grain, Cement , Ore )
Feature of BC ships
•Large hatch opening are a feature of all bulk carriers, in order to facilitate rapid and simple cargo handling.
•They do not carry cargo handling equipment, Since they trade between special terminals which have
special equipment. (gearless bulk carriers).
•Single deck ship
•A newly constructed bulk ships are double skin structure
•compound framing system
•The capacity of ballasttanks 30% to 40% of the total capacity of the ship
•BC ship has upper and lower hopper tanks to control the ships center of gravity
•It has a large hatch opening
It is designed for the carriage of general cargo special steel units called containers with length (20 – 40 feet) , loading and discharging at special container terminals in ports, always working on a schedules (liner).
Feature of Container ships
§Single deck ship
§High strength deck
§The upper deck is a flush deck
§Double Wall sided ship used as a side wing tanks
§There are a torsion boxes in the both sides
§The cargo hatches is extremely wide ( 80% of the ship wide)
§The ship holds divided to cells