Water Linked Underwater GPS Explorer Kit

The Water Linked Underwater GPS Explorer Kit includes the electronics, receivers, and locator needed to get started with this underwater positioning system! This system is fully supported on the BlueROV2 and ArduSub for map-based positioning and navigation. For use with the BlueROV2, we recommend the Integration Kit as well.

Configure your Underwater GPS system:

SKU: APS-WL-11001-RP
HS Code: 9014.80.4000


The Water Linked Underwater GPS Explorer Kit includes everything you need to get started with Water Linked modules for robust underwater positioning in your ROV, AUV, or other subsea system. The Master-D1 calculates the position of any Locator relative to the position of the Receivers with the APS100 technology. Combined with the integrated GPS and IMU, it will provide the absolute GPS position of the Locator. The operating principles can be found on the Water Linked website: Underwater GPS.

The Underwater GPS is similar to ultrashort baseline (USBL) systems often used on ROVs, but uses short baseline (SBL) technology that provides higher accuracy and better performance is complex environments such as water tank inspections, aquaculture, and infrastructure inspections.

With a small physical footprint, the kit is easily integrated into even the most compact equipment. It can be used retro-fitted to your system with the included cable, our integrated through your umbilical. 3D position data is accessed through an easy-to use API. Just power up and start exploring the underwater world!

For use with the BlueROV2, we strongly recommend getting the Water Linked Underwater GPS / BlueROV2 Integration Kit which makes it easy to seamlessly integrate the Underwater GPS into the BlueROV2 system.

The Water Linked product line also includes an acoustic modem for wireless underwater communication that resembles the positioning system’s Locators. These products can be used together simultaneously for wireless / untethered applications.

Demonstration Videos

BlueROV2 Manually Piloted to a Wreck at a Known GPS Coordinate:



Supply Voltage10-18V
Input Current400mA
Length270 mm
Width246 mm
Height 124 mm
Total Weight~4 kg
D1 Interfaces5x
Ethernet Interfaces1x
Acoustic Range100m
Operating Temperature-10 to 60 °C


Datasheet (PDF)

Revision History

14 May 2019

  • Added additional configurations for 50m and 100m receivers.

12 March 2019

  • Added additional configurations for S1 and U1 Locators.

3 April 2017

  • R1 – Initial release

Quick Start

Quickstart Guide (Water Linked Documentation)


Water Linked BlueROV2 Integration

Integrate the Water Linked Underwater GPS Developer Kit into your BlueROV2 to see where the ROV is on a map!

GUI Demo

GUI Demo Server

API Information

API Documentation

API Example Code


Blue Robotics Forum – Water Linked Acoustic Products

Water Linked Forum – Underwater GPS