Here is the full list of all 26 Overboard! achievements.
Three down
Two down
Put an old lady to sleep
Discuss literature with the highest authority
Reunite with Malcolm
Allow the killer to escape from justice!
Get yourself a nice man
Steer the ship
Establish relations with an officer
Get the killer sent to prison
Earn a small fortune for your efforts
Get off in 3 hours or less
Get off in 5 hours or less
Money, man and murderer in 5 hours or less
Everything ship-shape and Bristol fashion
Everything ship-shape in 5 hours or less
Money, man and murderer in 2 hours or less
Talk someone down
Get your way the hard way
Clean someone out at cards
Four down
Five down
Six down
Seven down
Everything ship-shape in 4 hours or less
All of Malcolm's possessions, into the sea