All these questions have two rhyming answers
40)Spent his days at the Admiral Benbow Inn (5,5) rhymes with Jones
49)Be in line with (7) Rhymes with Storm
20)Unable to see clearly when the grids shot out (12) rhymes with united
17)Early form of sextant (9) rhymes with babe
16)Rainproof retreat for poet (8)
rhymes with poseidon