ISO 22472:2016 船舶と海洋技術—航海データ記録装置（VDR）の操作と設置に関するガイドライン | ページ 5

3.1.1

alert

announcement of abnormal situations and conditions requiring attention

Note 1 to entry:Alerts are divided in four priorities: emergency alarms, alarms, warnings and caution.

3.1.2

alarm

condition requiring immediate attention and action, to maintain the safe navigation and operation of the ship

Note 1 to entry:An alarm is a high priority of an alert.

3.1.3

bridge work station

position at which a person is expected to be when performing one of the normal bridge duties

3.1.4

combined EPIRB/VDR capsule

single unit which meets all the requirements of a satellite EPIRB (as required by the carriage requirements of SOLAS IV) and all the relevant requirements of a VDR (as required by the carriage requirements of SOLAS V)

Note 1 to entry:Combined EPIRB/VDR capsule was defined by IMO COMSAR 8.

3.1.5

configuration data

describes the vessel's equipment, its installation on the vessel and its relation to the VDR

Note 1 to entry:The storage and playback software uses this data to store the data record and to convert the data record into information that assists casualty investigation during playback.

3.1.6

data

any item of information received by the VDR for recording, including numerical values, text and audio or radar signals and including all configuration data, except where specifically stated or where the context dictates otherwise

3.1.7

dedicated reserve power source

battery, with suitable automatic charging arrangements, dedicated solely to the VDR, of sufficient capacity to operate it as required by IMO Resolution MSC.333 (90):2012, 5.4.2

3.1.8

final recording medium

items of hardware on which the data is recorded such that access to any one of them would enable the data to be recovered and played back by use of suitable equipment

Note 1 to entry: The combination of a fixed recording medium (3.1.9) and float-free recording medium (3.1.10) and long-term recording medium (3.1.11) , together, is recognized as the final recording medium.

3.1.9

fixed recording medium

part of the final recording medium (3.1.8) which is protected against fire, shock, penetration and a prolonged period on the ocean floor

Note 1 to entry: to entry: It is expected to be recovered from the deck of the vessel that has sunk. It has a means of indicating location.

3.1.10

float-free recording medium

part of the final recording medium (3.1.8) which should float-free after a sinking

Note 1 to entry:It has a means of indicating location.

3.1.11

long-term recording medium

permanently installed part of the final recording medium (3.1.8)

Note 1 to entry:It provides the longest record duration and has a readily accessible interface for downloading the stored data.

3.1.12

playback equipment

any data medium with the playback software, the operational instructions and any special parts required for connecting a commercial-off-the-shelf laptop computer to the VDR

3.1.13

playback software

copy of the software program to provide the capability to download the stored data and play back the information

Note 1 to entry:The software should be compatible with an operating system available with commercial-off-the-shelf laptop computers and where non-standard or proprietary formats are used for storing the data in the VDR, the software should convert the stored data into open industry standard formats.

3.1.14

playback system

system including the playback equipment that is capable of downloading and playing back the recorded data

3.1.15

voyage data recorder

VDR

complete system, including any items required to interface with the sources of input signals, their processing and encoding, the final recording medium, the playback equipment, the power supply and dedicated reserve power source

3.1.16

resolution

smallest detectable increment between two values

3.1.17

signal source

any sensor or device external to the VDR, to which the VDR is connected and from which it obtains signals and data to be recorded