O filme (e o roteiro ) não fala sobre isso, mas o livro faz: Beck teve que rastejar no casco porque quando eles explodiram a ponta de Hermes, eles explodiram uma das portas, e você precisa de duas portas para poder entrar na nave 1 . p>
“We’re going to have to literally blow up one of the doors,” Lewis explained. “I’d rather we kill the inner one. I want the outer door unharmed, so we keep our smooth aerobraking shape.”
“Makes sense,” Beck responded as he floated back into the ship.
“One problem,” Lewis said. “I want the outer door locked in the fully open position with the mechanical stopper in place to keep it from being trashed by the decompress.”
“You have to have someone in the airlock to do that,” Beck said. “And you can’t open the inner door if the outer door is locked open.”
“Right,” Lewis said. “So I need you to come back inside, depressurize the VAL, and lock the outer door open. Then you’ll need to crawl along the hull to get back to Airlock 2.”
“Copy, Commander,” Beck said. “There are latch points all over the hull. I’ll move my tether along, mountain climber style.”
Chapter 26, emphasis mine.
1 Estritamente falando - ele poderia entrar na nave, mas o longo processo de repressurá-la (evacuaram todo o ar, afinal de contas) não permitiria ele para fazer isso a tempo.
Como apontado por @davidbak , Hermes no filme é diferente de Hermes no romance.
De acordo com a descrição de Andy Weir em um Reddit AMA , Hermes era diferente em sua visão:
I imagined an Hermes as being a very large cone-shaped ship, like a super-sized Orion capsule. It was split down the middle and the two halves could separate, attached with cables, and spin to provide artificial gravity.
Parece uma mistura das duas imagens abaixo:
The left option. The heat shield was not split. It remained a solid circle in the center.
Por exemplo a metade superior é um cone sólido e a metade inferior duas metades de um cone com o topo cortado.