BlueLocar Marlin single device


The new type Marlin device is the perfect wearable maritime safety system, the extra light and compact design allows for an application in any kind of aquatic sport. We specifically optimised the design in the means of usability. Therefore the Marlin is super simple to switch on and off. Each Marlin includes an internal GPS, which will ensure a quick localisation of the user. In an emergency situation the Marlin will transmit its position to every other BlueLocar device in the area, immediately alerting your on-site team.
Another useful feature is the flashlight and blinking light, greatly simplifying detection.
Attention: Cannot be used for locating and wireless Transmission without another type Ray device or a base station.
1x Marlin is shipped including a quickstart guide, carabiner and safety leash.

all prices include 20% VAT.
Price changes and errors reserved

Technical data

  • Pressure resistant to 100m water depth
  • Weight: 245g
  • Dimensions (WxLxH): 5.3 x 5.3 x 18.5 cm
  • GPS integrated
  • 5 white, green & red LEDs
  • Wireless connection: License free data transmission at 869,5 MHz (EU software version)
    915 MHz (US software version)
  • Wireless range: 3km-10km depending how high the antennas are above the water
  • Transmitting power 500mW
  • Battery: 4 x AA (not included)

All values ​​are subject to standard tolerances


What is the range of the wireless connection?

A statement about the range of a wireless connection between two points at sea only makes sense if the height of the antennas above the surface is defined. From a person in the water holding up the Ray to a receiver 150cm above the surface (shoulder height sitting in the zodiac) the range under usual conditions is 3000m. If one device is higher above the water (on a boat, on the shore) the range increases accordingly. At 3m height 4200m range and so on…

What legal requirements are necessary to operate the device?

You are free to use the device in the European Union. Noradiotelephone certificate (the device only transmits data) and no registration is required. There are also no annual fees of any kind. Outside the EU regulations can differ. BlueLocar Marlin has also been approved for the US and Canadian market. If you’re interested in using your device outside of the EU please don’t hesitate to contact us.

What is the purpose of the base station and when will it be available?

In general you only need a minimum of one type Ray device and one type Marlin devices to operate the system. The base staion is not required but generates additional comfort for larger boats and bases. The advantages are an increased wireless range by attaching the antenna high on a mast, a radar-like display of all type ray devices in range on a comfortable 7″ coulor display, a loud accoustic alarm in case of a received SOS signal.. The base is available for order.

What is the difference between SOS and HOME signals?

The SOS function is an emergency signal that is reveiced and located by all type Ray devices and all BlueLocar base stations. The HOME function is one level below, and is only received by devices of the same group (=your dive partners, your dive base), can be edited via software) and signals e.g. that you want to be picked up without being in an emergency situation.


  • The signaling-, locating- and tracking system based on the BlueLocar Ray, Marlin and base station with its numerous functions and applications is worldwide unique
  • Each type Ray device or base station is able to locate each other device in range. With this ability the necessity of any other infrastructure (voice radio, AIS, etc) is gone and so the system is easily applicable for small goups who want to safeguard each other. Also carrying a heavy base station is not necessary
  • The Marlin is pressure resistant to 100m water depth and with its robust housing designed as a workhorse
  • The wireless connection represents the latest state of the art. Up to 250 devices organize themselves in a network. Even forwarding a signal between two devices that are out of range via a device in between is implemented
  • Devices of the own group (your dive partners, your base) can be located even without SOS or HOME signal as long as they are in range
  • Individually (via pc-software) arrange device into groups
  • If a SOS or HOME signal was transmitted, it is displayed if another device has received the signal and if someone reacted manually to the signal
  • Flashlight and blinking light function for simplyfied optical detection