Thailand will host the 33rd SEA Games 2025 from 9–20 December, with water and air sports taking place off Pattaya – South Koh Larn – Koh Rang Kewian.

To ensure the safety of athletes and smooth navigation during the games, mariners are advised to avoid the designated competition zones in front of Ocean Marina Jomtien during the following periods:

3–15 November 2025 (Red Zone)

Time: 09:00–17:00 daily

• Sailing between Koh Rin and Koh Kram is permitted, except within the red zone.

• Do not pass in front of Ocean Marina Jomtien.

• Outbound route to the west (9 NM):

  • Start: 12°52.00’N, 100°45.00’E

  • End: 12°47.00’N, 100°45.00’E

16 November – 18 December 2025 (Blue Zone)

Time: 09:00–17:00 daily

• Avoid the blue zone directly in front of Ocean Marina Jomtien.

• Outbound route to the west (10.5 NM):

  • Start: 12°54.15’N, 100°43.50’E

  • End: 12°46.00’N, 100°43.50’E

• Do not navigate between:

  • The shore and Koh Rang Kewian

  • Koh Rin and Koh Kram

Vessels entering or exiting Laem Chabang, Koh Sichang, and Si Racha are advised to follow the pink and yellow marked routes shown on the official chart.

For further details or emergencies, contact Sri Racha VTS on VHF Channels 71 or 73.