Spaceship Medic, by Harry Harrison, paperback science fiction novel
“‘Space emergency! The hull of this ship has been holed. Follow space survival drill.’
‘We are all dead men,’ says First Engineer Holtz, when the spaceship Johannes Kepler is hit by a meteorite. But Lieutenant Donald Chase, a young doctor on his first flight, refuses to give in to despair. Soon he’s in charge of the damaged ship, sailing off course without radio contact and heading for a solar storm.
Can he get to Mars safely?”