Sir PERSON@1 -LRB- NUMBER@1 April NUMBER@2 NUMBER@3 April NUMBER@4 -RRB- , was a MISC@1 naval officer and explorer .

Sir PERSON@1 -LRB- April NUMBER@1 , NUMBER@2 -- April NUMBER@3 , NUMBER@4 -RRB- , was a MISC@2 naval officer and explorer .
