Historic navigator of many a new boat (5)

I believe the answer is:

cabot

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'historic navigator' is the definition.
The definition suggests a singular noun which matches the answer.

'many a new boat' is the wordplay.
'many' becomes 'c' (C is the Roman numeral for 100).
'a new' is an anagram indicator.
'boat' with letters rearranged gives 'abot'.
'c'+'abot'='CABOT'

'of' acts as a link.

Can you help me to learn more?

(Other definitions for cabot that I've seen before include "Sebastian & John -, early navigators" , "John (or Sebastian), Tudor explorer" , "One of two explorers" , "Name of two Italian navigator-explorers of the New World, father John and son Sebastian" , "famous explorer" .)

I've seen this clue in the Evening Standard.

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