本文件规定了用于导航和转向的船用磁罗盘、罗盘和方位读数装置的结构和性能要求。 规定了两种类型的binnacle；给定船舶的适当类型由船舶设计决定（见第5条）。 本文件适用于充液磁罗盘: -用于船舶航行和海上航行中的操舵； -有直读系统；和 -可以是反射型、投影型或透射型。 在本文件中，磁罗盘是一种仪器，由一个方向系统组成，该系统由一个碗内的单枢轴支撑，碗内完全充满液体，并由碗内或碗外的万向节支撑。 然而，本文件也涉及不带万向节的罗盘；有关万向节的要求不适用于此类罗盘。 本文件适用于船上携带的磁性罗盘: a） 根据《海上人命安全公约》第五章“a类磁罗盘”，所有船舶均需配备标准罗盘； b） 符合IMO救生设备（LSA）规范的救生艇和救援艇，配备b级磁罗盘；和 c） 上述a）和b）项不适用，但装有a类或b类磁罗盘的所有船舶。 本文件不适用于: a） 干卡规； b） 根据不同于上述原则设计的罗盘类型，或不符合给出的描述； 或 c） 手持罗盘。 附件A、B、C和D给出了船用磁罗盘、方位读数装置和罗盘的测试和认证要求。附件E、F和G分别给出了船上定位、安全距离确定和罗盘偏差调整的要求。附录H给出了救生艇/救援艇磁罗经的特殊要求。

This document specifies requirements for the construction and performance of marine magnetic compasses for navigation and steering purposes, binnacles and azimuth reading devices. Two types of binnacle are specified; the appropriate type for a given vessel is determined by the design of the ship (see Clause 5). This document applies to liquid-filled magnetic compasses: — intended for use in ship's navigation and steering in sea navigation; — having a direct reading system; and — which can be of the reflecting, projecting or transmitting types. In the context of this document, a magnetic compass is an instrument consisting of a directional system supported by a single pivot inside a bowl that is completely filled with liquid and supported by gimbals inside or outside the bowl. However, this document also addresses compasses without gimbals; the requirements relating to gimbals do not apply to such compasses. This document applies to magnetic compasses carried on board: a) all ships required to carry a standard compass as per SOLAS Chapter V, the Class A magnetic compass; b) lifeboats and rescue boats as per the IMO Lifesaving Appliances (LSA) Code, fitted with the Class B magnetic compass; and c) all ships to which a) and b) above do not apply, but which are fitted with a Class A or B magnetic compass. This document does not apply to: a) dry card compasses; b) types of compass designed on principles different from those stated above or not complying with the descriptions given; or c) hand bearing compasses. The requirements for the testing and certification of marine magnetic compasses, azimuth reading devices and binnacles are given in Annexes A, B, C, and D. The requirements for the positioning in ships, the determination of safe distances and the deviation adjustment of compasses are given in Annexes E, F and G, respectively. The special requirements of the magnetic compass for lifeboats/rescue boats are given in Annex H.