Pedzisa mutsara unotevera: De Neumann akatanga kukudziridza mifungo pamusoro pezvingaitika zvechiteshi-chinodzora gadziriro apo akanga ari kaputeni weHMRC "Vigilant". Iyi mifungo yakatevera kubva pakufunga nezvezviitiko zvakadai sekuputika netsaona kwechikepe chepasi pegungwa neHMS "Divina" muna 1950, chikepe cheNorway "Baalbek" kurovera neNore Army Fort muna 1953, uye njodzi
Mafashamo eNorth Sea akaunza mafashamo eCanvey Island, Foulness neEast Coast muna 1953. Muzviitiko izvi nezvimwewo, kununura uye kuunganidza ruzivo kwakakanganiswa zvakanyanya nekushayikwa kwekutungamira uye kutonga, izvo zvakakonzera kushayikwa kwekuziva mamiriro ezvinhu.