Thai Navy Patrols Waters After Armed Cambodian Boats Spotted

The Royal Thai Navy has intensified patrols in Thai territorial waters after detecting 20–30 Cambodian fishing boats repeatedly entering and exiting the area, some reportedly armed. Authorities say the vessels have also been involved in smuggling seafood products from Thailand into Cambodia, prompting heightened monitoring and enforcement measures.

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On 27 March 2026, Lt Cdr Nattakit Sawaengphon, a staff officer with the First Naval Area Command Fleet, confirmed that Cambodian boats had been crossing into Thai waters south of Koh Kut along the maritime boundary line known as bearing 211. Most vessels were found to have crossed approximately one mile, or 500 yards, into Thai territory before retreating when detected by naval radar.

He stated that Thai naval forces are conducting regular patrols along the boundary to assert sovereignty and intercept intruding vessels. While many Cambodian boats flee upon detection, some have been pursued and apprehended. The navy has also seized seafood shipments believed to have been illegally transferred from Thailand to Cambodia.

Concerns have been raised over the possibility that some Cambodian fishing boats may be armed, particularly given the absence of a formal Cambodian navy. Lt Cdr Nattakit said authorities are closely analysing behavioural patterns linked to increased incursions, especially since tensions along the Thai-Cambodian border escalated.

He added that clear directives have been issued for patrols to demonstrate Thailand’s territorial rights, with rules of engagement aligned with international standards. If vessels refuse to comply, escalation procedures begin with warning shots and may progress further if necessary.

The officer referenced a previous incident in 2025 involving a Vietnamese fishing vessel that collided with HTMS Thepa after entering Thai waters, highlighting the navy’s readiness to use force when required. He emphasised that enforcement actions would follow a graduated response from minimal to stronger measures depending on the situation.

Authorities believe some Cambodian vessels have been entering Thai waters specifically to collect salmon and other seafood products for transport back across the border. Thai forces have intercepted and confiscated such goods as part of ongoing enforcement operations.

Looking ahead, the Royal Thai Navy will continue surveillance and data collection on cross-border fishing activities, while maintaining a visible presence along disputed maritime zones. Officials have indicated that further action will depend on developments and any escalation in incursions or provocations.

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Adapted by ASEAN Now Naewna 28 Mar 2026

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