During September, there were two new detentions of foreign flagged vessels in a UK port, while three vessels remained under detention from previous months. A total of three vessels remained under detention at the end of September.
- The Norwegian-flagged 'Deep Cygnus' was detained on 2 September 2018 at Peterhead, after found with seven deficiencies, including five grounds for detention. This vessel was released on 4th September 2018.
- The Cook Islands-flagged 'Von Adler' was detained on 26th September 2018 at Ipswich, after found with sixteen deficiencies, including four grounds for detention. This vessel was released on 28th September 2018.
Detentions carried over from previous months
- The Icelandic-flagged 'Poseidon', found with 10 deficiencies, two of which were detainable, was detained on 19th July 2018 at Hull. This vessel was still detained on 30th September 2018.
- The Russian-flagged 'Tecoil Polaris' was detained on 6th June 2018 at Immingham, after found with 27 deficiencies with eight grounds for detention. This vessel was still detained on 30th September 2018.
- The unregistered 'Cien Porciento' was detained on 4 March 2010 with 30 deficiencies, including seven grounds for detention. This vessel was still detained on 30th September 2018.