The way that I have always done it is .
Arrive at port , park in lanes put it into ferry mode and on break .
Drive on boat put back on break .
Do crossing return to truck and change country on tacho .
Drive off boat leave port and park up and put tacho back on break .
Break must be total of 12 hrs from start to finish including maximum of two interuptions totalling no more than 1 hr .
You cannot have a reduced daily rest (9hrs) using ferry mode/ split break .
A bunk or couchette must be available during the ferry journey .
You cannot use the ferry break application on any crossing where bunks or couchettes are not available
.
Using this I have never had a problem with infringements.
Many of the tacho rules guides don’t cover ferry breaks or even double manning .
Try and get an official government issued guide.
They are handy and once you understand them they have all the answers .
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