Company: DLNG
Filing Date: 2025-04-10
Form Type: 20-F
Source: 0001104659-25-033744
Chunk: 231

Company: Dynagas LNG Partners LP
Filing Date: 2025-04-10
Form: 20-F
Item: Item 4
Chunk 231
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 render harmless, or avoid the uptake or discharge of new or invasive aquatic organisms and pathogens within ballast water and sediments. The BWM Convention’s implementing regulations call for a phased introduction of mandatory ballast water exchange requirements, to be replaced in time with mandatory concentration limits, and require all ships to carry a ballast water record book and an international ballast water management certificate.

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The MEPC adopted updated guidelines for approval of ballast water management systems (G8) at MEPC 70. At MEPC 71, the schedule regarding the BWM Convention’s implementation dates was also discussed and amendments were introduced to extend the date existing vessels are subject to certain ballast water standards. Those changes were adopted at MEPC 72. Ships over 400 gross tons generally must comply with a “D-1 standard,” requiring the exchange of ballast water only in open seas and away from coastal waters. The “D-2 standard” specifies the maximum amount of viable organisms allowed to be discharged, and compliance dates vary depending on the IOPP renewal dates. Depending on the date of the IOPP renewal survey, existing vessels must comply with the D-2 standard on or after September 8, 2019. For most ships, compliance with the D-2 standard will involve installing on-board systems to treat ballast water and eliminate unwanted organisms. Ballast water management systems, which include systems that make use of chemical, biocides, organisms or biological mechanisms, or which alter the chemical or physical characteristics of the ballast water, must be approved in accordance with IMO Guidelines (Regulation D-3). Based on subsequent amendments, all ships must meet the D-2 standard by September 8, 2024. Additionally, in November 2020, MEPC 75 adopted amendments to the BWM Convention which require a commissioning test of the ballast water management system for the initial survey or when performing an additional survey for retrofits. This analysis will not apply to ships that already have an installed BWM system certified under the BWM Convention. These amendments entered into force on June 1, 2022. Additional amendments to the BWM Convention, concerning the form of the Ballast Water Record Book entered into force on February 1, 2025.
Once mid-ocean exchange ballast water treatment requirements become mandatory under the BWM Convention, the cost of compliance could increase for ocean carriers and may have a material effect on our operations. However, many countries already regulate the discharge of ballast