No Name Pinnacle Koh Nang Yuan's Deep Pinnacle Dive Site

No Name Pinnacle is a submerged granite pinnacle off the west side of Koh Nang Yuan, about 200 m west of Twins Pinnacles. Among Koh Tao dive sites it is the deeper, wilder cousin of the Nang Yuan group: the top sits around 14 m, the sand starts near 20 m, and the rock keeps going toward 30 m on the far side.

Locals call it No Name, and you will also see it written as Noname Pinnacle. Divers come for three things: a big crack through the rock that works as a swim-through, a steady chance of open-water visitors, and the HTMS Suphairin wreck, which has lain just next to the pinnacle since 2023. It is an Advanced site, and a good one.

No Name Pinnacle dive site map

1. 2Main pinnacle, top 14 m
2. 3Smaller pinnacles, ~25 m
3. 4HTMS Suphairin wreck, 16 to 28 m
4. 5Sand toward Twins, ~20 m

Diving No Name Pinnacle: the route

Most dives start with a descent onto the main rocks. Circle the pinnacle slowly and keep glancing out toward the deep water. That is where the bigger fish pass, and it is easy to miss them if you stare at the rock the whole time.

From here you have two good choices. You can swim to the Suphairin wreck, which lies about 15 m to the north-west on the sand, or you can cross the sand to the east for roughly five minutes and finish on the shallower rocks of Twins. A common profile is a drop-off dive on the pinnacle followed by that easy swim across to Twins.

Underwater layout

The pinnacle's main rocks top out at about 14 m. A large crack runs between them and forms a swim-through, so bring a torch for a proper look inside. On the east side the sand begins at around 20 m. The west side slopes away into deeper water, with smaller pinnacles scattered at about 25 m.

The Suphairin wreck sits on sand in 24 to 28 m, close enough that the two sites feel like one dive. Exact depths vary with the tide and where you measure, so trust your own gauge.

The crack in the rock is the feature to look for. Groupers and morays tend to sit in the crevices around it, so approach calmly and give them room.

Marine life at No Name Pinnacle

The crevices hold groupers and moray eels, while scorpionfish and yellowmargin triggerfish are regulars. Fusiliers, trevally and barracuda cruise around the rock.

• Pelagics: queenfish, narrow-barred Spanish mackerel, cobia and rainbow runners pass by from time to time. A black marlin is a rare treat.
• Big visitors: a Jenkins whipray often rests on the deeper west side, and a whale shark may circle back to check out the bubbles.
• Macro: ornate ghost pipefish, bent stick pipefish and rare nudibranchs make this a good site for photographers. A seahorse turns up now and then.

The Suphairin wreck next door

The HTMS Suphairin was sunk here in 2023 as an artificial reef, and it changed how people dive the area. It lies upright on sand about 15 m from the pinnacle, so Advanced divers can see a natural rock and a warship in a single outing. It also works as a wreck-specialty training dive. Our full guide to the HTMS Suphairin wreck covers the ship itself.

Conditions and best time to dive

Current is usually mild to moderate, but it can run strong, so listen carefully to the briefing. Visibility swings a lot, from a murky few metres to 30 m on a clear day. A thermocline is possible, so a thicker suit does not hurt.

This is one of the best deep dives during the northeast monsoon, because it is the only partly sheltered deep site around Koh Tao at that time. The wreck side is at its best from March to September. In June to August the southeast monsoon wind and waves can make the west side bumpy, and swell on the west coast is possible in winter.

If you are visiting in the northeast monsoon, ask your dive centre about No Name when the east and north of the island are choppy. It is one of the few deep options that can still run.

Tips from local divers

• Look out toward deep water as you circle. The pelagics rarely come to you.
• Pack a torch for the swim-through crack.
• Plan for a shallow finish. The sand swim to Twins is a comfortable way to come up.

Safety notes

This is a deep site, up to around 30 m, so expect narcosis and shorter no-decompression times. Current can pick up, and visibility can drop fast. Dive it with a guide, keep your ascent controlled, and stay out of the wreck unless you hold wreck training.

Why dive No Name Pinnacle

• Granite pinnacle with a swim-through crack
• Ornate ghost pipefish and rare nudibranchs
• Pelagics: queenfish, cobia, Spanish mackerel
• Partly sheltered deep dive in the NE monsoon
• HTMS Suphairin wreck 15 m away
• Possible whale shark

No Name Pinnacle: frequently asked questions

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