Company: TEN-PE
Filing Date: 2025-04-11
Form Type: 20-F
Source: 0001193125-25-079101
Chunk: 59

Company: TSAKOS ENERGY NAVIGATION LTD
Filing Date: 2025-04-11
Form: 20-F
Item: Item 4
Chunk 59
---
 as well as ships operating within the 200 nautical mile border around the U. S., including the North American ECA and the U. S. Caribbean ECA, which encompasses waters around Puerto Rico and the U. S. Virgin Islands. The APPS statute requires engine manufacturers, owners and operators of vessels, and other persons to comply with Annex VI of MARPOL. The EPA and the U. S. Coast Guard (the “ USCG”) enforce these requirements pursuant to authority under APPS, the CAA and a 2011 Memorandum of Understanding between the EPA and the USCG setting forth the terms by which the EPA and the USCG mutually cooperate in enforcement and implementation.

  Table of Contents      34  

Amendments to Annex VI to address greenhouse gas (“ GHG”) emissions from shipping came into force on January 1, 2013. Newbuild vessels of 400 tons or greater are required to meet minimum energy efficiency levels per capacity mile (the Energy Efficient Design Index (“ EEDI”)), while existing vessels were required to implement Ship Energy Efficiency Management Plans (“ SEEMPs”). Amendments and guidelines to both EEDI and SEEMP have since been introduced, including but not limited to the 2022 Guidelines on survey and certification of EEDI, and the 2024 Guidelines for the development of a SEEMP. All our vessels have SEEMPs. The EEDI requirements do not apply to a liquefied natural gas (“ LNG”) carrier unless the construction contract for the carrier was placed on or after September 1, 2015. Our LNG carriers comply with EEDI requirements as indicated in the vessels International Energy Efficiency (IEE) Certificate. Implementing the requirements of Annex VI may require modifications to vessel engines or the addition of post combustion emission controls, or both, as well as the use of lower sulfur fuels. In April 2016, the IMO adopted an amendment to Annex VI regarding requirements for recording operational compliance with NOx Tier III ECAs (discussed in further detail below), and a further amendment to the NOx Technical Code 2008 to facilitate the testing of gas and dual fuel engines. This amendment entered into force on September 1, 2017. Further amendments to the Code came into force on 1 October 2020, governing electronic record books and certification requirements for SCR (selective catalytic reduction) systems. We believe that maintaining compliance with Annex VI will not have a significantly adverse financial impact on the operation of our vessels.

Further amendments to Annex VI of MAR