The Company's operations are affected by extensive, complex, and changing international, national, and local environmental protection laws, regulations, treaties, conventions and standards designed to reduce the risk of oil spills and water pollution and to regulate and reduce air emissions, including emission of greenhouse gases. These regulations are summarized in detail in Item 1, "Business - Environmental, Safety and Security Matters". These requirements impose significant capital and operating costs on OSG as well as the potential for unlimited liability in certain circumstances.
Due to concern over the risks of climate change, a number of countries, including the United States, and international organizations, including the IMO and the EU, have adopted, or are considering the adoption or modification of, regulatory frameworks to reduce greenhouse gas emissions. Regulations and the reporting mechanisms to measure emissions are evolving, as multiple concerned constituents attempt to standardize the measurement and reporting of varying operational factors for many types of vessels and conditions, including such measures as the Energy Efficiency Existing Ship Index ("EEXI") and the Carbon Intensity Indicator ("CII"). The CII's letter grading system for a ship's CO2 emissions performance is based upon calculation methodologies that are presently being debated, correction factors that are open to further modification, and a review process that will remain open until 2026, leading to considerable uncertainties in interpretation and enforcement. Absent a change in the CII rules as currently stated, ships with low grades may face the potential threat of enforcement and retirement if the ratings do not improve during the stipulated remediation period. The mechanisms to achieve a "passing" grade may require changes in the responsibilities among the supply chain participants, changes to the operating patterns of vessels or the speeds at which they may sail, or the types of fuel to be consumed, as well as capital investments in equipment and technology many of which are not yet established as viable.
These regulations could result in significant financial and operational impacts on the Company's business and on the global industry, including requiring OSG to install new emission controls, to invest in technologies or equipment, to retrofit vessels, to acquire allowances, or to pay taxes related to its greenhouse gas emissions. Further, in cases where the Company invests in new technologies or equipment, there is no assurance that such technologies or equipment will perform as expected, notwithstanding that the Company will have performed due diligence in selecting the particular technology or equipment.
Environmental laws and regulations can affect the resale value or significantly reduce the useful lives of the Company's vessels, require a reduction in carrying capacity, ship modifications, or operational changes or restrictions (and related increased operating costs) or retirement of service, lead to decreased availability or higher cost of insurance coverage for environmental matters, or result in the denial of access to, or detention in, certain jurisdictional waters or ports. Under local, national and foreign laws, as well as international treaties and conventions, OSG could incur material liabilities, including cleanup obligations, natural resource damages, fines and penalties in the event that there is a release of oil, petroleum or other hazardous substances from its vessels or otherwise in connection with its operations. OSG could be subject to personal injury or property damage claims relating to the release of or exposure to hazardous materials associated with its current or historic operations. Violations of or liabilities under environmental requirements also can result in substantial penalties, fines and other sanctions, including in certain instances, seizure or detention of the Company's vessels.
It can be expected that these regulations will continue to become stricter in the future and will require the Company to incur significant capital expenditures to keep its vessels in compliance, or even to scrap or sell certain vessels altogether. Such expenditures could result in financial and operational impacts that may be material to OSG's financial condition. The failure to comply with local, domestic and foreign regulations may subject the Company to increased liability, may invalidate existing insurance or decrease available insurance coverage for the affected vessels and may result in a denial of access to, or detention in, certain ports.