Oily Sheen, a Panamanian Flag, and a Cadet with a USB
At 14:00 a patrol aircraft photographs a 300-metre sheen trailing from the 4,000-car vehicle carrier MV Oriental Ace at anchor in Busan's territorial sea, 2.1 nautical miles from the fairway. The ship is Panamanian-flagged, has 22 crew, and is scheduled to sail for Japan at 18:00. The master denies any discharge and refuses access to the engine room, saying the ORB is 'commercial confidential'. A 23-year-old engine cadet, who is due to be repatriated tomorrow, hands the boarding officer a USB drive containing photographs of a flexible hose rigged to a bilge pump and a video of oily water being pumped overboard at 03:00. The ship's Oil Record Book shows no transfer that day. The patrol boat has no portable sampling kit beyond absorbent pads and two sample bottles.
1. Does the master's refusal to open the engine room prevent inspection? What legal basis and limits apply?
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The master's refusal is not the end of the matter. In the territorial sea Korea has full enforcement jurisdiction; the Maritime Environment Management Act implements MARPOL Annex I and gives designated officers power to board, inspect the Oil Record Book, take samples and copy records. The ORB is a statutory record, not 'commercial confidential'. Refusing access can itself be an offence, and the visible sheen plus the cadet's evidence establishes probable cause. Limit: the engine room is a locked commercial space. An administrative inspection may require access to the space where records are kept, but a criminal search for evidence should have a warrant unless there is exigency. Here the ship sails at 18:00, so exigency is arguable, but the better course is: request access in writing, record the refusal, request a warrant from the prosecutor, and in the meantime sample the sheen, photograph the hose and overboard discharge point, and question the master. If discharge is ongoing, take immediate action to stop it and secure the scene. Do not destroy or alter the hose.
2. How should the cadet's USB drive and statement be handled, given that he leaves tomorrow?
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Treat the cadet as a witness first, possibly a suspect second. He may have participated in the discharge, so do not promise immunity. Take a written statement in his own language or with a qualified interpreter, read it back, and have him sign each page. Copy the USB with a write-blocker, hash it, log the chain of custody, and keep the original sealed. Photograph the screen and the files; do not open them on a personal laptop. Record his passport, seaman's book, address, phone, email and next of kin. He is due to be repatriated tomorrow: there may be no legal basis to detain him, but ask him to remain available and explain that a court may need his testimony. Notify the prosecutor and the flag state. If he fears retaliation, consider a written request to the company to delay repatriation-not an order-and record the request.
3. Can the ship be prevented from sailing at 18:00, and what notifications are required?
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Prevent sailing through lawful channels, not self-help. Request the port authority to withhold clearance and consider an administrative order to stop the vessel from sailing pending investigation; ask the prosecutor to seek preservation of the vessel and evidence if the law allows. UNCLOS Art. 220 supports detention for evidence in pollution cases, but the legal basis and proportionality must be recorded. Notify Panama's flag state administration and the nearest consulate without delay, and inform the master of that notification. Bond: the EEZ Act bond procedure does not automatically apply in the territorial sea; do not invent one. If the master is arrested, the 48-hour warrant clock applies. Release the ship only when the evidence is secured and the prosecutor agrees; a departure could put the evidence and the crew beyond reach.