ham ▁repr ised ▁the ▁role ▁of ▁the ▁White ▁Guardian , ▁that ▁he ▁had ▁previously ▁played ▁in ▁the ▁ 1 9 7 9 ▁serial ▁The ▁Rib os ▁Operation . ▁ ▁Design ▁The ▁interior ▁sets ▁of ▁the ▁boats ▁were ▁not ▁built ▁specifically ▁for ▁the ▁programme , ▁but ▁were ▁pulled ▁together ▁from ▁stock ▁items ▁from ▁various ▁prop ▁w are h ouses . ▁C um ming ▁had ▁originally ▁hoped ▁to ▁simulate ▁the ▁rock ing ▁of ▁the ▁ships ▁by ▁mount ing ▁the ▁sets ▁on ▁roll ers ▁but ▁the ▁idea ▁was ▁dropped ▁due ▁to ▁costs , ▁with ▁the ▁effect ▁achieved ▁by ▁moving ▁the ▁cam eras ▁instead . ▁The ▁photo ▁of ▁T eg an ' s ▁A unt ▁Van essa , ▁one ▁of ▁the ▁items ▁created ▁by ▁Mar r iner ▁from ▁the ▁contents ▁of ▁her ▁mind , ▁was ▁shot ▁specifically ▁for ▁the ▁film ing , ▁requiring ▁Dol ore ▁Wh item an ▁( who ▁had ▁played ▁the ▁character ▁in ▁Log opol is ) ▁to ▁be ▁contract ed ▁for ▁a ▁one - day ▁photos ho ot . ▁The ▁models ▁of ▁the ▁boats , ▁used ▁in ▁the ▁racing ▁sequences , ▁were ▁props ▁s our ced ▁by ▁visual ▁effects ▁designer ▁Mike ▁K elt ▁following ▁extensive ▁research ▁at ▁the ▁National ▁Mar itime ▁Museum . ▁The ▁ships ▁were ▁mounted ▁on ▁ro ds ▁for ▁film ing , ▁while ▁the ▁o ars ▁were ▁battery ▁operated . ▁The ▁model ▁of ▁Dave y ' s ▁ship ▁remained ▁int act , ▁with ▁explos ion ▁being ▁a ▁fil med ▁effect ▁that ▁was ▁edited ▁into ▁the ▁sequence . ▁K elt ▁was ▁shock ed