disembark
Please assemble on the foredeck for disembarkation.
On disembarkation he was immediately arrested.
If the takeoff of an aircraft is seriously delayed, there should be the immediate disembarkation of passengers.
It takes some time to go through the disembarkation process.

SMART Vocabulary: related words and phrases

Boarding and alighting from modes of transport
aboard
bestride
board
climb
debark
deplane
disembark
dismount
eject
embarkation
entrain
get
get off
get on
get out
hop
in
mount
settle
straddle