When Can You Switch Off AIS?
AIS is the Automatic Identification System that is compulsory on most vessels. Despite its compulsory status, there are a few very select occasions when a…
How Does A Hydrostatic Release Unit (HRU) Work?
A Hydrostatic Release Unit (HUR) is a device used to automatically release safety equipment when a vessel sinks. The most common places to find HRUs…
What Equipment Do You Need For Celestial Navigation?
Celestial navigation is all about using the stars and celestial bodies to find your position. In the middle of the ocean, it is really your…
How Big Is A Search And Rescue Transponder (SART)?
Search and Rescue Transponders are electronic devices that grab the attention of nearby vessels by painting a distinctive pattern on their radar screen. In an…
Does A VHF Antenna Need To Be Grounded?
I have used VHF radios for my entire career, but I have never had to install one myself. It turns out there is a lot…
How Many SARTs Are There On A Ship?
Search and Rescue Transponders (SARTs) are a compulsory piece of GMDSS equipment that ships need to carry. In accordance with SOLAS, Chapter 4, the number…
Where Should You Mount An EPIRB On A Boat?
The EPIRB is the one device on a boat that is capable of automatically sending a distress signal from anywhere in the world, independent of…
How Many EPIRBs Are There On A Ship?
Emergency Position Indicating Radio Beacons are an essential piece of search and rescue technology on modern vessels. But, just how many are required to be…
How Long Does An EPIRB Last?
If you have thought about buying an EPIRB, I am sure you have already looked at its cost. But, have you considered its value? Value…
What Is The Difference Between An EPIRB And A PLB?
If you are considering purchasing emergency locating equipment, I am sure you will have already asked yourself: What is the difference between an EPIRB and…
What Are The Requirements For Flares On A Boat?
SOLAS registered ships need to have at least 12 rocket parachute flares located on, or near to, the navigational bridge. For smaller vessels, however, the…
How Does Marine GPS Work?
I am sure you already know what a GPS is, but have you ever wondered: How does GPS work? How does it actually calculate your…