Originally Posted by twistedtree
I'm curious why? What parts
of a Class A device are important for long range cruising? I ask because I'm building just such a boat, but have selected Class B. Trying to see what I missed.
Class A is 25 watts instead of 2 watts. Thats a hell of a difference.
Ships are expecting to see people a long way away and some Class B installations only show up under 10 nms. Fine for sailing boats.... But not for a ship doing 20 knots at 3 am when the junior officer shakes in his hoes at the thought of waking the captain
isnt much different, $900 for the Raymarine
650 and $3000 for the raymarine
class A equivalent.
The only reason why class b was brougt in at all was boats pleading not enough electricty to power it. However in modern, new build boats we have much better generation and battery
banks. And remember the 25 watts is only for a fraction of a second... But i dont know what the hourly amps ungd would be... But cant be much.
Now, into Class A information itself.... The heading of a sail boat in a seaway can be all over the place, ony updated every 39 seconds you could be 30 degrees off course surfing a wave.... But on the ships screen
it looks like you are heading safely away. Class A not only updates every ten seconds but shows the ruder angle too. Also, and quite importantly, it shows the destination
When i am watching a ship and he is doing something "weird" as ships seem to do, the destination
and ETA can help you work out what the hell is going on. If his destination is X but pointing towards Y then look for a shipping
channel he has to turn into, etc.
Similarly if you have Class A you make it easier for them to work out your plan.
When. I solo sail at night where. I mingt oversleep my alarm
I have in my boat name box Solosailor (actually its soloslr as the box aint big enough), i think it gives ships better warning of me too. With class A i could put up a limited manoverability flag etc, or NUC etc. All valuable stuff for your safety
So why only. Long range cruising? Because allthat extra information is cost effective for a fie year circumnavigation
or ten year retirement
, but maybe not for a one year lets sit on the anchor
in the caribbean