scope:

This document specifies the minimum functional and technical requirements for a Maritime Survivor Locating Device (MSLD) system.

MSLD Alerting Units (AUs) are intended to be carried by individuals engaged in on-deck activities on vessels, or in activities on shore where falls into the water are a risk, or in other marine activities where location of persons may be required.

The purpose of the AU is to send a local alert primarily to a mating Base Unit (BU) on one's own vessel or facility, and possibly also to other BUs on other vessels nearby. The MSLD system is not intended to perform the functions of an Emergency Position Indicating Radio Beacon (EPIRB). The AU may also serve as a locating beacon to assist in the individual's recovery.

The AU typically consists of a transmitter module, an integral antenna, and a power source, all contained in a wearable watertight case. The AU is typically used in conjunction with a mating BU on a vessel, but may be used with an existing receiver suited for the purpose. In addition, the system includes a Locating Function (LF) to aide in the search and rescue of the individual, which may or may not be part of the BU.

The MSLD system operates on a radio frequency authorized for this type of service.

The body of this standard is organized into two main parts:

• Common requirements for all MSLDs (Sections 1 through 8).

• Requirements for specific types of MSLDs (Annexes A through E).