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...

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...

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...

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...

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...

What Food Is In A Ship’s Lifeboat?

Lifeboats are designed to keep you alive in the event of an emergency on board a ship. They give you all the necessities. Keeping...

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...

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...

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...

How To Properly Adjust The Squelch On A VHF Radio

The squelch setting on your VHF is a way of rejecting background static. It improves safety by helping navigators concentrate, reduces VHF power consumption,...

Casual Navigation is an informal resource for learning maritime navigation. On this site, you will find information, tips, and guidance that would normally be taught in a professional setting.