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Maritime Survivor Locating Devices…

Confused About Sea Marshall SOS Man Overboard Systems?

A Maritime Survivor Locating Device is a self-managed Man Overboard System consisting of Alerting Units and Base Units.

The system has two main components which interact with each other to create the ‘Sea Marshall® Man Over Board System’.

Man Overboard Systems
Diver Locating Systems
Submariner Escape PLBs

‘Sea Marshall® Searching New Horizons’

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Alerting Units - a device worn by a person which communicates with a Base Unit to indicate when a Man Over Board Incident has occurred. Sea Marshall® Alerting Units transmit an emergency homing signal on 121.5 MHz (International SAR Homing Frequency)

Worn by each crew member there is a miniature ‘SOS’ MOB Alerting Unit (Personal Locator Beacon), robust, fully automatic miniature radio transmitter designed to be discreetly worn around the neck or incorporated into a lifejacket, immersion suit. In the event of a crew member falling over board, within approximately 15 seconds, their Sea Marshall® ‘SOS’ Alerting Unit will automatically transmit a signal on 121.5 MHz, the International SAR homing frequency. 

 

 

 

Sailors - Boaters - Kayakers
 (PLB8-LR)
Personal Locator Beacons (MOB)
Personal Locator Beacons - MOB Beacon

Divers-Dive Boat Operators
 (PLB8-LD)
Diver's Beacon Lost diver locator
Diver's Beacon - Lost Diver Locator

Offshore & Oil Rig Workers
 (IS-PLB8)
PLB - Personal Locator Beacon, Offshore MOB alerting
Intrinsically Safe  PLB Offshore MOB Alerting

 

Base Units - a device that receives radio signals from one or more Alerting Units to indicate that a person using an Alerting Unit has fallen over board.

The Sea Marshall® ‘SOS’ Base Unit. can be one of two options; it can be either a MOB alarm only, the Sea Marshall® Crewguard. Or it can be the dedicated Man Over Board Alarm and Radio Direction Finder called the Sea Marshall® SARfinder®. This raises the alarm and gives the Direction of the MOB on its high visibility, fully waterproof electroluminescent backlit display panel.

 
SARfinder 1003
 


Dual Band Fixed Directional Finder Continuously Monitors for a Signal from a Sea Marshall® Alerting Unit
CrewFinder
 

Radio Direction
Finders
RT-202
RT-300
RT-500

 
CrewGuard
CG 121
Portable

Man Over Board Alarm only with optional Autodialler & External Antenna for remote unmanned installations

 
Learn the Basics of a Maritime Survivor Locating Device
Disclaimer: Sea Marshall® Alerting Units/MSLDs are an ‘Aid to rescue only’, they do not guarantee your safety. The Sea Marshall® MSLDs will dramatically increase the chances of detection and location of a Man Over Board. Personal safety remains at all times the sole responsibility of the individual. It is the responsibility of the individual to inform their local Coast Guard, their senior personnel/crew members and or family of their intended location/destination and estimated duration of journey. It is also the responsibility of the individual to notify these people of the type of safety equipment they will be carrying. In the case of accidental activation the user should de-activate the unit and notify the appropriate Search And Rescue Authority.