As has been said several times, you are allowed two interuptions to your rest, for moving on and off a ferry or train.
The time allowed is 1 hour spread over both movements.
As everything has to fit into the 24 hours from the time you start day 1 until the time you start day 2, you should arrive and be parked up on the dock no more than 12 hours after you started, to give you that 1 hours movement time.
It isn’t essential that you use it for every ferry journey. Only if time parked on the ferry is less than 9 hours and you need to get a rest in. If you’ll get 9 hours + on the ferry and you’ve got a 9 hr rest available, you don’t need to do any of this. Humber crossings to European ports are well over 11 hours, so there’s no need for ferry mode. Just log off for the country you’re in, rest, log on for the disembarkation country, go.
Using ferry ‘mode’.
1 arrive at dock, park up, log off on your tacho and put it on rest.
2 on being told to board the ferry/train, go through the menu and press ferry mode.
3 board ferry/train, put it back on rest
4 in the arrival port, if your total rest so far doesn’t equal 11 hours, just before moving again press ferry mode.
4a if you’ve already got 11 hours rest in total, you’re good to go, jump to step 6
5 Drive off, find somewhere to park up asap, put it back on rest.
6 Once you have 11 hours total rest, log back on to start your shift including start country. You’re good to go.[/list:u]
Pressing ferry mode puts a ‘flag’ on your tacho record, it isn’t a ‘mode’ as such, like driving, rest etc are.
You put the flag on your tacho records just before each movement, to inform whoever wants to look at your records that this movement was for going aboard or disembarking from a ferry or train.