▁Susan ▁Sh el by ▁ ▁Arthur ▁O ' Con nell ▁as ▁Chap lain ▁John ▁ ▁Eric ▁She a ▁as ▁Robin ▁Sh el by ▁ ▁Les lie ▁N iel sen ▁as ▁Captain ▁Harrison ▁ ▁Fred ▁S ado ff ▁as ▁Lin ar cos ▁ ▁By ron ▁Web ster ▁as ▁Pur ser ▁ ▁Jan ▁Ar van ▁as ▁Dr . ▁Car av ello ▁ ▁She ila ▁Mat he ws ▁as ▁Nur se ▁ ▁John ▁C raw ford ▁as ▁Chief ▁Engine er ▁ ▁Bob ▁H ast ings ▁as ▁M . C . ▁ ▁Erik ▁Nelson ▁as ▁T ink ham ▁ ▁Production ▁The ▁novel ▁was ▁acquired ▁by ▁Av co ▁Emb ass y ▁in ▁ 1 9 6 9 ▁and ▁Allen ' s ▁Kent ▁Produ ctions ▁signed ▁a ▁deal ▁with ▁them ▁to ▁make ▁three ▁mov ies , ▁including ▁The ▁P ose id on ▁Advent ure . ▁Av co ▁Emb ass y ▁cancel led ▁the ▁production ▁and ▁it ▁moved ▁to ▁ 2 0 th ▁Century ▁Fox ▁who ▁contributed ▁half ▁of ▁the ▁budget . ▁Steve ▁B roid y ▁and ▁Sh err ill ▁Cor win ▁helped ▁fin ance ▁the ▁rest . ▁ ▁Music ▁The ▁score ▁for ▁the ▁film ▁was ▁composed ▁and ▁conducted ▁by ▁John ▁Williams . ▁ ▁There ▁was ▁no ▁sound track ▁album ▁at ▁the ▁time ▁of ▁the ▁film ' s ▁release . ▁The ▁only ▁music ▁released ▁from ▁the ▁film ▁was ▁a ▁hit ▁single ▁cover ▁version ▁of ▁The ▁Mor ning ▁After , ▁performed ▁by ▁singer ▁Ma ure en ▁McG overn , ▁though ▁the ▁film ▁version ▁was ▁performed ▁by ▁Ren ée ▁Arm and ,