Saga47swan Sailingvideo

Ocean Signal MOB1 AIS - Routine Testing - Functional, DSC and AIS Tests

13 October 2025 · 6 min · 3K views · Long Island Sound

Skipper tests AIS device on sunlit deck

What this video covers

The Ocean Signal MOB1 AIS personal-overboard device requires three distinct tests, and this walkthrough covers all of them aboard the Swan 47 S&S Saga during a passage down Long Island Sound from Newport to New York.0:03 The functional test presses the T-button until a red flash appears, then releases; a green light confirms the device is operational, amber signals low batteries, and the number of flashes indicates remaining charge.1:27 The DSC transmission test holds the button through a five-second steady red phase before release, then verifies the call on the VHF radio under the "others" menu, where the device's individual number appears.2:10 The AIS/GPS transmission test requires going on deck; the button is held through a red-flash phase, a five-second steady phase, and a slow-flash phase before release, then the chartplotter below triggers an AIS safety message reading "MOB test."3:09 Ocean Signal recommends the functional test monthly and the DSC and AIS/GPS tests up to twice a year; the presenter suggests combining all three with PFD servicing and adding an extra AIS/GPS test before any major offshore passage.4:59

Watch on YouTube

Boats in this video

Swan 47 S&STheir boat

More from Saga47swan Sailing

The lost City of Colombia - Ciudad Perida - a 4 days trek into Inferno VerdeJul 2026Passage from Caribbean to Brazil - 2200 NM against wind and ocean currentMar 2026Sailing from Sambro to Tanners Pass - Sail Around Nova Scotia - Part 3Feb 2026Sailing from Whitehead to Halifax - Sail Around Nova Scotia - Part 2Feb 2026

From Saga47swan Sailing — see the channel’s boat, crew, and every analysed video.

The Sailing Directory Newsletter

One email with the fleet's best finds — the moments, boats, and stories worth your watch time. Enter your own address to get your own copy.

Report an issue