| Air draught | the vertical distance from the surface of the water to the
highest point of the ship’s mast or aerial. |
| Bale capacity | -cubic capacity of a cargo space when the breadth is
measured from the inside of the cargo battens (spar ceiling) and the measured
depth is from the wood tank top ceiling to the underside of the deck beams.
-length is measured from the inside of the fore and aft bulkhead stiffeners |
| Grain capacity | cubic capacity of a cargo space when the length, breadth and depth are measured from the inside of the ship’s shell plating, all allowance
being made for the volume occupied by frames and beams. |
| Ballast water | water with its suspended matter taken on board a ship to control trim, list, draught, stability or stresses of the ship. |
| Bilge well | a. Either of the rounded areas that form the transition between the bottom
and the sides on the exterior of a hull.
b. Also, bilges. (in a hull with a double bottom) an enclosed area between
frames at each side of the floors, where seepage collects.
c. Also called bilge well: a well into which seepage drains to be pumped
away |
| Bulkheads | a steel wall, usually watertight, which divides the inside of a ship
into separate sections at the ends of each holds. |
| Broken stowage | -space between packages which remains unfilled.
-percentage that has to be allowed varies with the type of cargo and
with the shape of the ship’s hold.
-is greatest when large cases are stowed in an
end hold or at the turn of a bilge. |
| Cargo information | appropriate information relevant to the cargo and its
stowage and securing which should specify, in particular, the precautions
necessary for the safe carriage of that cargo at sea. |
| Stowage factor | -volume occupied by unit weight of cargo.
-usually expressed as cubic meter per tonne (m³/tonnes) or cubic feet per tonne
(ft³/tonne).
-it does not take account of any space which may be lost due to
broken stowage. |
| Cargo Securing Manual | -manual that is pertinent to an individual ship.
-shows the lashing points in details of the securing of relevant cargoes
carried by the vessel.
-the securing examples are based on the transverse, longitudinal and
vertical forces which may arise during adverse weather conditions at sea. |
| Cargo plan | -a ship’s plan which shows the distribution of all cargo stowed
onboard the vessel for the voyage.
-each entry details the quantity, the weight, and the port of discharge.
-constructed by the ship’s cargo officer and would effectively show special loads such as heavy lifts, hazardous cargoes, and valuable cargo, in addition to all commodities being shipped. |
| Cargo ship | any ship which is not a passenger ship, troop ship, pleasure vessel or fishing boat. |
| Cargo spaces | the parts of a ship where goods can be carried. |
| Dangerous goods | a product, substance or organism included by its nature or by the regulations in any of the classes listed in the schedule to the Transportation of Dangerous Goods Act, 1992. |
| Deck | platform in a ship serving usually as a structural element and forming the floor for its compartments. |
| Deadweight | the difference in tonnes between the displacement of a ship at the summer load waterline in the water of specific gravity of 1025, and the lightweight of a ship. |
| Deadweight cargo | -cargo on which freight is usually charged on its weight.
-usually less than 1.2m³/tonne (40 ft³/tonne) is likely to be rated as deadweight cargo. |
| Measurement cargo | -cargo on which freight is usually charged on the volume occupied by the cargo.
-usually light and bulky stowing at more than 1.2m³/tonne (40 ft³/tonne)
-may also be heavy castings of an awkward shape where a lot of space is occupied. |
| Deep tank | -extends from the tween decks to the bottom of the hold.
-used for containing ballast water or for the carriage of oil (usually vegetable) as cargo
-occasionally used for carrying dry cargo. |
| Draft survey | means of determining the weight of any materials being loaded into (or discharged from) a vessel. |
| Dunnage | -rough timber of varying lengths which usually takes the form of short planks or boards.
-used in the stowage of cargo for protecting packages from damage.
-must be dry and clean and free of infestation |
| Freight | 1. money paid for the safe carriage of cargo.
2. actual goods carried. |
| Gross tonnage | measurement of the total internal capacity of the ship. |
| Hatchway | -a large opening in the deck of a ship through which cargo is loaded and discharged.
-protected by vertical plates known as hatch coamings (3-6ft) or guard rails. |
| Passenger ship | a ship designed to carry more than 12 passengers. |
| Long tonne | 2240 lbs |
| Short tonne | 2000 lbs |
| Metric tonne | 1000 kg |
| Safe Working Load (SWL) | -acceptable working tonnage used for a weight-bearing item of equipment.
-one-sixth the breaking strain (BS) |
| Paragraph ship | a ship whose gross tonnage is just below a certain figure which, if it had been exceeded, would have entailed more stringent requirements and a higher running cost. |
| Peak tanks | -tanks in the forward and after ends of a vessel.
-used to trim the ship.
-their ballast is varied to meet required changes in trim.
ex. should the after hold be empty, the vessel would ride so high
that the propeller would lie half out of water and lose much of its efficiency |
