Kled Kaew Wreck

A mooring line runs straight from the surface to the hull, and the standard route drops first to the sand at 26-27 metres, saving the wheelhouse for last. From there, circle the hull base and check the propeller at the stern before shallowing up over the front deck, where porcupinefish gather in numbers unusual for a single dive. The final stretch is the ascent to the wheelhouse and upper superstructure at 14 metres, where a resident school of yellow snapper is often thick enough to hide the structure behind it. Below the wheelhouse, two further decks of cabins, railings and ladders remain open to divers with the right training: holes were cut through the hull before the sinking specifically to allow safe interior access, though marine growth has narrowed some of those entry points since. The wreck rests almost upright with a 10-20 degree list to port, oriented north-south along the current, which is why the whole dive is planned around the tide instead of the clock.

Kled Kaew is the one confirmed wreck dive sold out of Koh Lanta, and it began life somewhere else entirely: a Norwegian naval support vessel built in 1948, sold to the Royal Thai Navy in 1956, and run as a transport and stores ship for close to six decades before the navy and the Department of Marine & Coastal Resources sank her deliberately in 2014, purpose-stripped of hazards and cut open for divers before she went under. That gives Kled Kaew an origin most artificial reefs do not have: a wreck prepared for the dive it now offers, not scavenged for one.

It is also a wreck with no fixed address. Every operator running trips here sells the dive as a Koh Lanta day out, yet the wreck itself sits east of Koh Phi Phi Leh, inside the marine park built around Phi Phi, outside the one around Lanta. Whose wreck it is depends on whether you ask the boat that gets you there or the map underneath it, and neither answer is wrong.

The Phi Phi-Phuket stretch's other well-known wreck, the King Cruiser near Anemone Reef, sits deeper with more of its structure collapsed after nearly three decades underwater; some comparisons between the two rate Kled Kaew, shallower and still largely intact, as the wreck worth repeating.

Nudibranchs colonise the rusted steel plates and handrails throughout the wreck, a reliable macro subject at any point on the dive. The wide-angle case is the wheelhouse itself at 14 metres, where the resident snapper school can swallow the whole structure into a wall of gold, and the porcupinefish gathering over the front deck lower down. A torch pays off both ways: it picks out the colour on lionfish and scorpionfish that daylight flattens against the hull, and it is the best way to spot the occasional frogfish tucked into the structure.

This is an advanced dive by every operator's own rating, driven less by the 14-metre wheelhouse than by the current and the 26-27 metre sand below it; Advanced Open Water covers the depth, and one operator requires 30 logged dives with a dive in the last eight months before it will take a diver here. Current is the defining hazard: the wreck's north-south orientation makes it especially current-sensitive, and trips are scheduled around half-moon neap tides to avoid the stronger flow of a full moon. Scorpionfish and lionfish, both venomous and easy to miss against the rusted hull, are common throughout the wreck, and longspine sea urchins colonise the deck, so check a surface with your eyes before resting a hand or a fin on it. Wreck penetration is possible through holes cut before the sinking, but it takes wreck-specific training and a guide who knows the current entry points, since marine growth has made some of them tighter than they once were. Trips run from Koh Lanta's Saladan pier through the dry season, though how much of the rest of the year the site stays open is not something every operator agrees on. Divers have logged the wreck at the poor end of its visibility range, five to seven metres, with a medium-low current, and still called it a rewarding dive, so a grey day here is not a wasted one.