Turning off alarm system for ferry travel.

[Malcolm Steele]

I've just taken delivery of hhe MG and plan to travel by ferry in the next few days. We are advised to turn off alarm systems on hhe ferry because of possible movement and vibration. The car handbook does not show how to turn off yhe alarm. However as the alarm is only anti theft and immobilisation maybe there is no alarm for any movement?
Can anyone advise whether I need to disable the alarms and if so how?
Many thanks.
Malcolm Steele