On Wed, 11 May 2005 08:40:34 +0100, "Jeff" wrote:

I doubt if AIS will ever replace DSC for calling distress working, those
functions are not included in the protocol, and the channel occupancy can be
too high for reliable distress working

It's a pity though - to have distress transmissions included in AIS would be
very useful would only require another message number to be added (although
it would mean a hell of a lot of firmware upgrades around the world!)

Is channel occupancy really that much of a problem? I've been looking at data
from around some of the busiest shipping lanes in the world, and there still
seems to be plenty of capacity.

Dave

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