 Nyorera kupfuurira kweiyi ndima - Paaive achishanda kuNavy, Craven akabatsira kupayona kushandiswa kwemaitiro ekutsvaga kweBayesian kutsvaga zvinhu zvakarasika mugungwa Bayesian search theory. Basa raCraven rakabatsira zvikuru pakutsvaka kweNavy bhomba rehydrogen rakanga rarasika muGungwa reMediterranean, kure nemhenderekedzo yeSpain muna 1966. Kubudirira kukuru kwakatevera kwaCraven kwakanga kuri mukutsvaka nokuwana ngarava yepasi pegungwa, iyo yakanga yanyangarika mumvura yakadzika muAtlantic Ocean kumadokero kwePortugal neSpain. 