Choose the first letter of the word sought or type the word you are searching for in the field above.
- OBOs
- Ore/Bulk/Oil carriers - one of the various types of combination carrier
- official number
- a registered number issued by a flag state to all merchant ships
- ohm
- the practical unit of electrical resistance and is equivalent to 1 ampere of electric current flow at a potential drop of 1 volt
- ohmmeter
- an instrument for measuring the electric resistance in ohm
- oil mist detector
- safety device for detecting dangerous accumulation of oil mist in diesel engine crankcase; the oil mist may be a result of hot spot arising in the bearings; the heat generated from the hot spot may cause the lubricating oil to evaporate into gaseous particles and also act as an ignition source for the oil mist to explode under certain conducive conditions; the resulting explosion is known as crankcase explosion
- oil record book
- a mandatory logbook for recording the handling of oil sludge and oily water to and from a ship; this is usually maintained by Chief Engineer for Oil Record Book part I; in the case of tanker there will be an additional record book - Oil Record Book part II - which will be maintained by Chief Officer; it is one of the many countermeasures against marine pollution
- oily water separator
- a specially designed filtering equipment in multiple stages to separate and remove the oil content in bilge water such that the final discharge is less than 15 p.p.m.; an environmental protection measure enforced by international regulation and compulsory on most ships
- old man
- an informal name given by seamen to the Master of a ship
- olefins
- class of unsaturated paraffin hydrocarbons obtained from petrol
- open charter
- a ship hiring contract or charter party with the nature of cargo or destination ports not specified
- ordinary seaman
- a most junior seaman who works in deck department and has not yet qualified as able seaman; OS for short
