Item (Ranking)

Explanation

matches (15)

No air on Moon so matches will not burn

food (4)

Efficient means of supplying energy requirements

rope (6)

Useful in scaling cliffs or use in case of emergency

parachute (8)

Possible use as sun shield

heater (13)

Not needed unless on dark side

pistol (11)

Possible means of self-propulsion

milk (12)

Bulkier duplication of energy source

oxygen (1)

The most pressing survival requirement

constellation map (3)

Primary means of navigation

raft (9)

Carbon dioxide bottle possible propulsion source

compass (14)

Useless; Moon has no global field

water (2)

Replacement of tremendous liquid loss on lighted side of Moon

flares (10)

Distress signal when rescue ship is sighted

first aid kit (7)

Needles for medicines and vitamins fit special aperture on suit

FM transceiver (5)

For communication with rescue ship on line of sight