Alan Eves is considering using an AIS Net Location Beacon app as a cheaper useful additional aid in poor visibility. Is it a good idea?

Can the AIS Net Location Beacon App be used for coastal cruising?

We sail the coastal area out of Plymouth in our Moody 27.

I’ve put off fitting AIS in part due to the very high cost and secondly because of the very few occasions of coastal fog where it would be a useful additional safety device.

Could I download an AIS Net Location Beacon app as a cheaper useful additional aid in poor visibility for coastal passages?

Alan Eves

Duncan Kent replies:

Unfortunately, web-based AIS platforms are not entirely reliable as they don’t always update in real-time and only work when your device is connected to the Internet.

Some boat owners fit receive-only AIS devices (known as AIS Class B), which are considerably cheaper than the full two-way transceiver units.

However, I believe it’s equally important to be seen as to see others at night or in limited visibility.

AIS is a very useful collision avoidance device, which is certainly worth having if you ever plan to sail across the Channel.

It not only allows you to see other vessels and receive warnings if they are on a possible collision course, but it also gives you the MMSI of the vessels displayed so you can direct dial them over the VHF radio to ask if you’re at all in doubt of their intentions.

In thick fog, though, I’d rather have a good-quality radar set from which I could see land and navigate into a safe port if needed.

Having both would obviously be the perfect solution, but I understand that’s a serious investment for a relatively small cruising boat.


Want to read more practical articles?

A subscription to Practical Boat Owner magazine costs around 40% less than the cover price.

Print and digital editions are available through Magazines Direct – where you can also find the latest deals.

PBO is packed with information to help you get the most from boat ownership – whether sail or power.

        • Take your DIY skills to the next level with trusted advice on boat maintenance and repairs
        • Impartial in-depth gear reviews
        • Practical cruising tips for making the most of your time afloat

Follow us on Facebook, Instagram, TikTok and Twitter