Crossword Genius

Report of Boatman will get to Sri Lanka, perhaps (4)

Ross

I believe the answer is:

isle

'sri lanka perhaps' is the definition.

I cannot understand how the remainder of the clue works.

(Other definitions for isle that I've seen before include "Man's one" , "This could be key" , "eg Skye" , "Spot (in ocean)" , "Body of land surrounded by water" .)

I've seen this clue in The Guardian.
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