1: Comic Viking bombs fish (5)
4: Good eater has more gut upsets (7)
7: Its neat for a vessel to have this appearance (9)
9: Dragon's heart eaten by god of heathens (5)
11: Measure of heat in the empty room (5)
12: Courier parting from Essen, Germany (9)
13: Glass part of lock (7)
14: Left a port near Dubrovnik (5)
16: Climaxes after starting advances (5)
17: Albatross, seals cluster here! (4,3)
18: 'Gigolo, Inc.' lothario sporting primitive G-string (9)
20: Excellent bowls for cooking furry critters (5)
21: Acid destroyed brace (5)
22: Welsh resort - and no dull resort (9)
23: Lead prisoner next to vent (7)
24: Stir outspoken 3-down resident, usually (5)