{Except these abide in the ship} (Ean m(8820)houtoi mein(9373)in
en t(9369) ploi(9369)). Condition of the third class (undetermined, but
with hope, etc.). Paul has no hesitancy in saying this in spite
of his strong language in verse  24  about God's promise. He has
no notion of lying supinely down and leaving God to do it all.
Without the sailors the ship could not be properly beached.