Solution by Dave Havard, played on the Amstrad
You start in a cell

Call Guard, Guard, Give Me Food, Peel Banana, Eat Banana, Drop Skin, Call Guard, South, West, South, South, South, South (To washroom), Get Knickers, Examine Knickers, Get Elastic, Drop Knickers.

East, South, East, East, South, West, West (To Kitchen), Get Lard, Get Bone, East, South, East, South, South, East, (To Workshop), Get Ball- bearing. West, North (x7), East, East, East (To Compound), Give Bone To Dog, Get Stick, Examine Stick, Tie Elastic To Stick.

West, West, West, North, North, West, West, West (To staff sleeping quarters), Fire Ball At Engineer, Get Overalls, Examine Overalls, Get Key, Wear Overalls, South, East, South (To typists office), Unlock Drawer With Key, Open Drawer, Get Magnifying Glass.

East (To Hinson's Office), Get Paper, Read Paper (You can't, so...) East, South, South, West (To Lecture room), Get Crayon, Rub Crayon Onto Paper, Read Paper (You still can't, so...) Read Paper With Glass.

East, North, North, East, East (Type...) NE1, Open Safe, Get Token, East (To Medical Room), Get Clock, Examine Clock, West, West, West, South, South, South, South, East, East (To stores, Ignore warning if wearing overalls), East (To Stores), Give Token To Man.

West, North (To Lab. No.3), Remove Overalls, Get Suit, Examine Suit, Wear Suit, North (To Lab. No.2), Read Notice, North (To Lab No,1), Open Freezer, Enter Freezer, Leave Freezer, South (To Lab No.2).

East (To Missile Room), Cut Padlock With Bolt Cutters, Open Panel, Examine Chamber, Wind Clock, Put Clock Into Chamber, Get Mechanism, West, West, South, South (To End of Corridor), Enter Lift, Press Button, Leave Lift.

East, North, East, South, Get Oar, West, South, East, East, Hit Crocodile With Oar, South (To Beach), Remove Suit, East. Enter Shed, Examine Boat, Leave Shed, East, Get Wood, Examine Wood, West, West, West, Up (To Cliff- top), Light Wood With Magnifying Glass, Down, East, East, East, Climb Into Boat, Up, (To Submarine Deck).