The vessel has space for 24 guests in en-suite cabins with individual air-conditioning, carries two dive-guides and offers free nitrox, wi-fi, and red wine with dinner.

Echo is sailing the Simply the Best, Famous Five, Southern Sharks, South & St Johns, Safaga, Brothers & Elphinstone and Reefs & Wrecks routes when the weather and sightings are at their peak.

Prices for seven days start from £597pp (two sharing) with six days’ diving, local transfers, taxes and fees.

Meanwhile in the Maldives, where the operator already runs another six liveaboards, Emperor Orion has had an inside-and-out facelift said to have been guided by guest feedback.

Seven-night trips start from £1322pp (two sharing a twin cabin).