Can you get everyone below deck when under aircraft attack?-without decks awash

[Paul Riley]

Earlier in my patrol tonight I entered AL24,just south of Iceland.It was daylight and had been quiet from air attacks for a long while.I came to within about 600km of the Icelandic coast when a group of 3 P38 fighter bombers came in on my port side and began a VERY FAST attack run.My first encounter with these aircraft also.I was caught off guard and couldnt get the men to the guns quick enough so I ordered flank and began to wildly zig zag,causing the first run of bombs to miss with quite a large margin actually,probably also due to their very fast approach,they overthrew.
This naturally came as quite a shock,and forced me to change my tactics,by submerging all through the day when operating at this range from Iceland,surfacing to recharge only at night,which I have to say is still protecting us from aircraft...for now.
My question is this,is it possible (via a mod for example) to get your men off the deck without going decks awash or submerging?,in order to retain all your speed if caught off guard,or unable to man the guns in rough weather.I really dont want to lose any of my men to MG fire because I couldnt get them below quick enough,which actually happened on my last patrol,I lost 2 men trying to fight back after being totally surprised.

Thanks!