"Dolfijn-class submarine" . . "Dolfijn-class" . "7.8" . "''Dolfijn''- and ''Potvis''-class submarines" . "''Dolfijn'' or ''Dolphin''-class submarine" . . . "26.854" . . "''Potvis''" . "Dolfijn" . . . . "''Dolfijn''" . "79.5" . . "Dolfijn-class submarine" . . .