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Technical Notices

Panama Flag | STS Operations Plan for Panama Flagged Oil Tankers revisions, review and approval

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The Panama Maritime Authority (PMA), through adopted circular MMC-217, has introduced stricter requirements for ship-to-ship (STS) transfers of oil cargo in response to growing concerns about illegal trans shipments.

From 6 August 2025, Panama flagged Oil Tankers of 150gt and above, acting as a discharging or/and receiving vessel, must:

  • Update their STS operations plan to include “Transfer Notification” information as specified in MMC-217 paragraph 6.6.
  • Transmit the required information to the Panama Flag Administration through the E-Segumar Platform at least 48 hours prior to the planned STS transfer operations. The new E-Segumar module will be online from 6 August 2025.
  • Comply with these requirements for timely notification or face possible administrative measures (as per maritime regulations and oversight procedures established by the Administration).

STS transfers with sanctioned vessels are strictly prohibited. Ships must ensure their AIS and LRIT systems are fully operational during STS activities, per SOLAS Chapter V.

The updated STS operations plan must be approved by the RO and be ready on board and presented to the surveyor for verification during the first annual, intermediate or renewal survey of the International Oil Pollution Prevention Certificate (IOPP), whichever occurs first, after 6 August 2025.

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