DHT owns and operate a single class of ships; Very Large Crude Carrier (VLCC). VLCC’s offer the most energy efficient form of seaborne transportation of oil with the smallest emission footprint per unit transported. The DHT fleet consist of 14 Eco vessels, and 13 ships with conventional design.
Emissions from oil transportation using oil tankers are a function of vessel design, technology, condition of the ship and operational mode such as speed.
DHT reports in accordance with IMO’s Data Collection System its carbon intensity metric, referred to as Annual Efficiency Ratio (AER). It reports the AER data to each vessel’s relevant Flag State who issues a Certificate of Compliance and transfers the data to IMO’s Ship Fuel Consumption Database. IMO includes the data in its annual report to its Marine Environment Protection Committee (MEPC). The Energy Efficiency Operational Index (EEOI) is another tool to monitor the energy efficiency of each vessel in the fleet at work. In the below table you will find both the AER and EEOI for the DHT fleet. These are calculated as follows:
AER: (grams of CO2) / (total distance traveled * DWT)
EEOI: (grams of CO2) / (tonne-miles)
|GHG||Emission 2019, mt*||AER||EEOI|
* Based on conversion factors provided by IMO
From January 1, 2020, IMO implemented a regulation to limit emissions of Sulphur Oxides (SOx) thereby reducing air pollution from ships. The regulation limits the use of fuels with sulphur content in excess of 0.5%, unless the ship is fitted with an Exhaust Gas Cleaning System (EGCS). DHT operates in full compliance with these regulations.
Spill of hydrocarbons into the environment could have a critical environmental impact. The key mitigating factors to minimize the risk of this includes owning and operating a high quality fleet of well-maintained vessels and continued implementation of robust operational procedures executed by highly qualified and well trained personnel. Our procedures are prepared in accordance with “American Bureau of Shipping’s (ABS) Guide for Marine Health, Safety, Quality, Environment and Energy”. The guide incorporates principles embodied in the following accreditations by Goodwood:
- ISM Document of Compliance by American Bureau of Shipping (ABS)
- ISO 9001, certified by ABS
- ISO 14001 Environmental Management, certified by ABS
- OHSAS 18001 Occupational Health and Safety Assessment, certified by ABS
- ISO 27001 Standard for Cyber Risks & Security, certified by ABS
- ISO 50001 Energy Management, certified by ABS
- U.S. Coast Guard Qualship 21 program
- Green Award by Green Award Foundation
The procedures and related documentation are being reviewed and audited on a regular basis by ABS and various leading oil companies.
Further, Goodwood regularly conduct “tabletop” drills simulating shipboard incidents involving ship staff and shore staff to ensure vessels and crew are prepared and ready to react at all times. The company’s vessels maintain a good record with Oil Majors, Port State Authorities, the US Coast Guard (USCG) and other relevant maritime authorities.
Ballast Water Treatment
IMO put the Ballast Water Treatment Convention into force in September 2017. The objective is to reduce or eliminate invasive aquatic species in ships’ ballast water when loading and discharging ballast water in different geographical areas. All ships in excess of 400 GRT will be required to install a type approved ballast water treatment system at their first mandatory International Oil Pollution Prevention (IOPP) survey after September 2019, but in no case later than September 2024.
As of March 21, 2019, DHT had Ballast Water Treatment Systems (BWTS) installed on 14 vessels. The remaining ships will install BWTS in accordance with the convention at their next IOPP survey and as such will have this installed and operational ahead of the 2024 deadline.
DHT upholds the following policy with respects to retiring a ship from its trading life:
If the Company were to sell a ship for demolition, the Company shall prepare the ship to facilitate safe and environmentally sound recycling in accordance with the Hong Kong Convention. It should be sold in accordance with the “BIMCO Recyclecon” terms, “Standard Contract for the Sale of Vessels for Green Recycling” and with the commitment from the Buyer to provide the Company with certification from the Ship Recycling Facility that its Ship Recycling Facility Plan is in compliance with and will be executed in accordance with the Hong Kong Convention.