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    Fisheries Violation
    serious offence

    Illegal, Unreported, and Unregulated (IUU) Fishing in Thailand

    Fishing without proper licenses, in prohibited zones, using banned methods, or failing to report catches as required.

    Last updated: February 2026
    Legal Sections

    Royal Ordinance on Fisheries B.E. 2558 (2015)

    Maximum Penalty

    Imprisonment up to 5 years and/or fine up to THB 30 million; vessel confiscation

    Severity Level

    serious

    Definition

    Fishing without proper licenses, in prohibited zones, using banned methods, or failing to report catches as required. Under Thai law, this offence is classified as a serious offence within the category of Fisheries Violation.

    Elements of the Offence

    For a conviction, the prosecution must prove all of the following elements beyond reasonable doubt:

    1

    Fishing activity in Thai waters

    2

    Without valid license or in prohibited zone

    3

    Use of illegal fishing methods

    4

    Failure to report catches

    Penalties

    Maximum Penalty

    Imprisonment up to 5 years and/or fine up to THB 30 million; vessel confiscation

    Actual sentences depend on factors including the severity of the conduct, harm caused, prior convictions, and mitigating circumstances. Courts have discretion to impose lesser sentences within the statutory range.

    Possible Defences

    The following defences may be available depending on the circumstances:

    Valid fishing license

    Traditional fishing rights

    Force majeure affecting compliance

    Note: The availability of defences depends on specific facts. Professional legal advice is essential.

    For Foreigners

    Special Considerations for Foreign Nationals

    Thailand strictly enforces IUU regulations following EU yellow card experience. Foreign fishing vessels face severe penalties; crew repatriation at owner expense.

    When Legal Representation Matters

    If you are accused of illegal, unreported, and unregulated (iuu) fishing or facing investigation, immediate legal representation is essential to protect your rights and build an effective defence.

    Anglo Siam Legal provides experienced legal services across Thailand for both Thai nationals and foreigners.

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