Witnesses to the recent Black Cat cruise boat accident after it grounded just outside the Akaroa Heads are urged to submit a statement to TAIC immediately.
That property by which something stands out, ie its importance relative to other objects.
OBL
Onehunga Branch Line
Occurence
An occurrence is an event that has been reported through a safety management system as a notification and classified in terms of a standard taxonomy.
OCIMF
Oil Companies International Marine Forum
OCS
Oceanic control service
OEM
Original Equipment Manufacturer
Off-track alert
An ECDIS alert that is triggered when a ship departs its planned track by a pre-designated distance.
Officer of the watch
A deck officer assigned the duties of watch-keeping and navigation on a vessel’s bridge
Offset
Reduced life limit for the engine
Oiler
A junior position within the vessel’s engineering team, responsible for general maintenance and cleaning.
Oily water separator
An oil-discharge monitoring, filtering and control system that ensures oil discharged to the sea does not exceed a rate of 15 parts per million.
OJT
On-the-job training
On-job training
On-job training spans the period when a trainee completes practical train driving training a minimum time period of 1040 hours before a full certification assessment can be conducted.
On-scene coordinator
Coordinator of all search and rescue assets at the scene. The RCC still retained responsibility for overall coordination of the search.
On-the-Job Training (OJT)
The placement of a trainee with a licensed practitioner in actual operations to carry out safety-critical tasks. The purpose of this training is for the trainee to gain exposure to a range of experiences and become fully competent in the designated tasks.
On-track
The term used to position a road rail vehicle known as a hi rail vehicle on a level crossing or track access site to engage the vehicle’s rail wheels with the track for rail operation.
On-tracked
The activity whereby the HRV transitions from the road onto the railway track by lowering the rail wheels. Off-tracking is the opposite action, from the railway track onto the road.
On/off track
The location where an HRV will on-track or off-track
Onboard service manager
The onboard service manager has overall responsibility for the conduct of the on-board service crews and the boarding and de-training of passengers.
Onboard Staff Manager (OSM)
Manages the onboard service on the train.
One-way grass strip
An airstrip that can only be used for taking off and landing from the same direction, in this case from the south.
OOW
Officer of the watch
Open boat
A boat not protected from the entry of water by means of a complete deck or by a combination of deck, weathertight superstructure and deckhouse.
Operating instruction
A method of authorising a train journey for use only on the Midland line
Operating weight of the helicopter
The empty weight of the helicopter with the spray system installed, plus the weight of the pilot and the fuel on board.
Operator
A person authorised to operate a mobile track-maintenance vehicle and who is in charge of the train or machine group.
Operator’s exposition
A manual that defines the organisation, identifies the approved senior persons and details the means of compliance with the CARs.
OpsSpec
Operations specification (USA)
Ordinary Safety Assessments (OSAs)
OSA is a safety assessment undertaken of all parts or any part of a rail participant’s rail activities to enable the Director of Land Transport to gain appropriate assurances that those rail activities will continue to be conducted safely or to determine the action that must be taken by the rail participant so that those assurances may be gained.
Ordinary Seaman (OS)
Seafarer, aged 18 or more, who has not qualified to be rated as an AB.
Organisational psychology
Organisational psychology is a branch of psychology that applies psychological theories and principles to organisations.
Orographic uplift
The process by which a mass of air is lifted by a geographical feature such as a line of hills or a mountain range.
OS
Ordinary seaman
Out of ground effect (OGE)
A helicopter is said to be OGE when the rotor downwash is no longer affected by the surface under it and more power is required to hover. This change occurs gradually at a height equivalent to about one rotor disc diameter.
Out of tolerance
Not within specific limits of measurement
Out short
Pull out a short distance and stop.
Outboard
Away from the centre of a ship
Outbound pilotage
The activity carried out by a pilot in assisting the master of a ship in navigation while entering or leaving a port.
Output shaft RPM
Engine output shaft speed, expressed as a percentage of revolutions per minute
Overfalls, eddies and breakers
A turbulent stretch of water caused by a strong current or tide over a submarine ridge, or by a meeting of currents
Overhead electrical traction power
25-kilovolt electrical wires used for providing power (traction) to electric trains. The wires are held aloft from the track by traction masts.
Overhead position
A pilot can join the circuit pattern at an unattended airfield by flying overhead the airfield at an altitude 500 ft above the circuit altitude so that they can assess the wind direction and circuit direction in use by other aircraft.
Overhead power lines
Overhead power lines operate with a current of 1500 volts, which powers the train as it operates under them. They are connected by the train’s adjustable pantograph to transfer the power to the train’s traction motor system.
Overlap
The section of line in advance of a stop signal that must be unoccupied.
