TIÊU CHUẨN CHO ĐO NGHIÊNG ĐIÊN TỬ
PERFORMANCE STANDARDS FOR ELECTRONIC INCLINOMETERS
MSC.363(92)
1 SCOPE
1.1 Electronic inclinometers are intended to support the decision-making process on board in order to avoid dangerous situations as well as assist in and facilitate maritime casualty investigations by providing information about the roll period and the heel angle of the ship.
1.2 Electronic inclinometers should, in a reliable form: .1 determine the actual heel angle with the required accuracy; .2 determine the roll amplitude with the required accuracy; .3 determine the roll period with the required accuracy; .4 present the information on a bridge display; and .5 provide a standardized interface to instantaneous heel angle to the voyage data recorder (VDR).
2 APPLICATION OF THESE STANDARDS
2.1 These Performance standards should apply to all electronic inclinometers intended to support the decision-making process on board in order to avoid dangerous situations as well as to assist in maritime casualty investigations, if carried, on all ships1 .
2.2 In addition to the general requirements set out in the General requirements for shipborne radio equipment forming part of the Global Maritime Distress and Safety System (GMDSS) and for electronic navigation aids (resolution A.694(17)2 ) and the presentation requirements set out in the Performance standards for the presentation of navigation-related information on shipborne navigational displays (resolution MSC.191(79)), electronic inclinometers should meet the requirements of these standards and follow the relevant guidelines on ergonomic principles3 adopted by the Organization.
3 DEFINITIONS
For the purpose of these Performance standards, the following definitions apply:
.1 Rolling is the motion around the longitudinal axis of the ship; .
2 Actual heel angle is the momentary angle of roll referenced to a levelled ship to port or starboard side;
.3 Roll period is the time between two successive maximum values of heel angle on the same side of the ship; and .4 Roll amplitude is the maximum values of heel angle to port or starboard side.
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