Vessel goes round island in pleasure trip (6)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

CRUSE [vessel – as in the widow’s cruse of oil] around I[sland]; a rather unfortunately topical introductory clue 6 POTTER : two cryptic definitions: a snooker player is one who pots and Harry Potter is the wizard schoolboy 9 MASHIE : MAS [well-qualified people] + HIE [run] 10 ACCIDENT : anagram [change] of DICE CAN’T 11 BEAU : BE [live] + A + U [socially acceptable] 12 TIEBREAKER : double / cryptic definition, which I would have expected to be hyphenated 13 SHADOW-BOXER : two meanings of ‘dog’ 18 APPRENTICE : cryptic definition, as in the the first line of the song, ‘The Lincolnshire Poacher’: ‘When I was bound apprentice in famous Lincolnshire’ 21 ORBS : cryptic definition, ‘orbs’ being a poetic word for ‘eyes’, 22 FURLOUGH : FÜR [German ‘for’] + LOUGH [Irish lake] 23 BACK UP : double definition 24 GANNET : GAN [reversal of NAG – ‘horseback!] + NET [catch] 25 PROSIT : anagram [drunk] of PORT IS – nice surface