There are a number of risks associated with the operation of ocean-going vessels, including mechanical failure, collision, fire, human error, war, terrorism, piracy, loss of life, contact with floating objects, property loss, cargo loss or damage and business interruption due to political circumstances in foreign countries, hostilities and labor strikes. Any of these events may result in loss of revenues, increased costs and decreased cash flows. In addition, the operation of any vessel is subject to the inherent possibility of marine disaster, including oil spills and other environmental mishaps.
There are also liabilities arising from owning and operating vessels in international trade. We procure insurance for our fleet in relation to risks commonly insured against by vessel owners and operators. Our current insurance includes (i) hull and machinery and war risk insurance covering damage to our vessels' hulls and machinery from, among other things, collisions and contact with fixed and floating objects, (ii) war risks insurance covering losses associated with the outbreak or escalation of hostilities and (iii) protection and indemnity insurance (which includes environmental damage) covering, among other things, third-party and crew liabilities such as expenses resulting from the injury or death of crew members, passengers and other third parties, the loss or damage to cargo, third-party claims arising from collisions with other vessels, damage to other third-party property and pollution arising from oil or other substances, and salvage, towing and other related costs, including wreck removal.
We do not currently maintain strike or off-hire insurance, which would cover the loss of revenue during extended vessel off-hire periods, such as those that occur during an unscheduled drydocking due to damage to the vessel from accidents except in cases of loss of hire up to a limited number of days due to war or a piracy event. Other events that may lead to off-hire periods include natural or man-made disasters that result in the closure of certain waterways and prevent vessels from entering or leaving certain ports. Accordingly, any extended vessel off-hire, due to an accident or otherwise, could have a material adverse effect on our business and our ability to pay distributions to our unitholders.
We can give no assurance that we are adequately insured against all risks or that our insurers will pay a particular claim. Even if our insurance coverage is adequate to cover our losses, we may not be able to obtain a timely replacement vessel in the event of a vessel loss. Under the terms of our credit facilities, we are subject to restrictions on the use of any proceeds we may receive from claims under our insurance policies.
Because we obtain some of our insurance through protection and indemnity associations, we may also be subject to calls, or premiums, in amounts based not only on our own claim records, but also the claim records of all other members of the protection and indemnity associations. There is no cap on our liability exposure for such calls or premiums payable to our protection and indemnity association. Our payment of these calls could result in significant expenses to us, which could have a material adverse effect on our business, results of operations and financial condition. In addition, we cannot assure you that we will be able to renew our insurance policies on the same or commercially reasonable terms, or at all, in the future. For example, more stringent environmental regulations have led in the past to increased costs for, and in the future may result in the lack of availability of, protection and indemnity insurance against risks of environmental damage or pollution. Any uninsured or underinsured loss could harm our business, financial condition, cash flows and results of operations. In addition, our insurance may be voidable by the insurers as a result of certain of our actions, such as our vessels failing to maintain certification with applicable maritime self-regulatory organizations. Further, we cannot assure you that our insurance policies will cover all losses that we incur, or that disputes over insurance claims will not arise with our insurance carriers. Any claims covered by insurance would be subject to deductibles, and since it is possible that a large number of claims may be brought, the aggregate amount of these deductibles could be material. In addition, our insurance policies are subject to limitations and exclusions, which may increase our costs or lower our revenues, and could have a material adverse effect on our business, financial condition, cash flows and results of operations. A catastrophic oil spill or marine disaster could exceed our insurance coverage, which could have a material adverse effect on our business, results of operations and financial condition and our ability to make distributions to our unit holders. Any uninsured or underinsured loss could harm our business and financial condition. In addition, the insurance may be voidable by the insurers as a result of certain actions, such as vessels failing to maintain required certification.
Our charterers may in the future engage in legally permitted trading in locations or with persons which may still be subject to restrictions due to sanctions or boycott. However, no vessels in our fleet have called on ports in sanctioned countries or countries designated as state sponsors of terrorism by the U.S. State Department, including Iran, Syria, or Sudan. Our insurers may be contractually or by operation of law prohibited from honoring our insurance contract for such trading on such locations or countries or trading with such persons, which could result in reduced insurance coverage for losses incurred by the related vessels. Changes in the insurance markets attributable to the risk of terrorism in certain locations around the world could make it difficult for us to obtain certain types of coverage. In addition, the insurance that may be available to us may be significantly more expensive than our existing coverage. Furthermore, our insurers and we may be prohibited from posting or otherwise be unable to post security in respect of any incident in such locations or countries or as a result of trading with such persons, resulting in the loss of use of the relevant vessel and negative publicity for our Company which could negatively impact our business, results of operations, cash flows and unit price.