Company: TEN-PE
Filing Date: 2025-04-11
Form Type: 20-F
Source: 0001193125-25-079101
Chunk: 87

Company: TSAKOS ENERGY NAVIGATION LTD
Filing Date: 2025-04-11
Form: 20-F
Item: Item 4
Chunk 87
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 April 1, 2024, there were fifty-three treatment systems which have obtained USCG type approval. Several U. S. states, such as California, have also adopted more stringent legislation or regulations relating to the permitting and management of ballast water discharges compared to EPA regulations.

  iii.      IMO International Convention for the Control and Management of Ships’ Ballast Water and Sediments ("BWM Convention")  

At the international level, the IMO adopted an International Convention for the Control and Management of Ships’ Ballast Water and Sediments in February 2004 (the “ BWM Convention”). The BWM Convention entered into force on September 8, 2017. Under the BWM Convention, all ships in international traffic are required to manage their ballast water on every voyage by either exchanging it or treating it using an approved ballast water treatment system. All ships have to carry an approved Ballast Water Management Plan and a Ballast Water Record Book, and all ships of 400 gross tons and above have to be surveyed and issued with an International Ballast Water Management Certificate. The BWM Convention sets out two standards of compliance, D1 and D2. The D1 standard requires ships to exchange ballast water in open seas away from coastal areas. The D2 standard in Regulation D-2 of the BWM Convention outlines the standard that ballast water treatment systems must meet. The standards involve maximum levels of certain microorganisms, such as plankton and intestinal enterococci, for given amounts of ballast water. All ships must maintain the D1 standard until required to comply with the D2 standard. All ships constructed after entry into force of the BWM Convention (September 8, 2017) will have to be compliant on delivery with the D2 standard. Existing ships are required to be compliant with the D2 standard by their first International Oil Pollution Prevention (“ IOPP”) renewal survey on or after September 8, 2017. Ships constructed before September 8, 2017 are required to comply with the D2 standard at the first IOPP renewal survey on or after September 8, 2019. All ships must have installed a ballast water treatment system which is compliant with the D2 standard by September 8, 2024. The IOPP renewal survey refers to the renewal survey associated with the IOPP Certificate required under MARPOL Annex I. The BWM Convention does not apply to ships not carrying ballast water, domestic ships, ships that