SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Cash and cash equivalents - Interest-bearing deposits that are highly liquid investments and have a maturity of three months or less when purchased are included in cash and cash equivalents. Pursuant to the terms of the OBS Facility, in the event of a spinoff of INSW, the Company was required to set aside, in an escrow account, cash in an aggregate amount of not less than the sum of all accrued and unpaid interest on the outstanding Unsecured Senior Notes (as defined in Note 9, “Debt”) through the date of the consummation of the INSW Spinoff and all interest expense that will accrue under the respective outstanding Unsecured Senior Notes from the date of the consummation of the INSW Spinoff through the maturity of the respective Unsecured Senior Notes. Activity relating to restricted cash is reflected in investing activities in the consolidated statements of cash flow. Additionally, management had designated cash reserves of $5,576 as of December 31, 2016 to be utilized for the settlement of certain unsecured claims related to the Company's emergence from bankruptcy.


2.	Vessels, vessel lives, deferred drydocking expenditures and other property - Vessels are recorded at cost and are depreciated to their estimated salvage value on the straight-line basis over the estimated useful lives of the vessels, which are generally 25 years (except for new ATBs for which estimated useful lives of 30 years are used).

Other property, including leasehold improvements, are recorded at cost and amortized on a straight-line basis over the shorter of the terms of the leases or the estimated useful lives of the assets, which range from 3 years to 15 years.

Interest costs are capitalized to vessels during the period that vessels are under construction however, no interest was capitalized during 2017, 2016 or 2015, as there were no vessels under construction.

Expenditures incurred during a drydocking are deferred and amortized on the straight-line basis over the period until the next scheduled drydocking, generally two and a half to five years. The Company only includes in deferred drydocking costs those direct costs that are incurred as part of the drydocking to meet regulatory requirements, or are expenditures that add economic life to the vessel, increase the vessel’s earnings capacity or improve the vessel’s efficiency. Direct costs include shipyard costs as well as the costs of placing the vessel in the shipyard. Expenditures for normal maintenance and repairs, whether incurred as part of the drydocking or not, are expensed as incurred.

The carrying value of each of the Company’s vessels represents its original cost at the time it was delivered or purchased less depreciation calculated using estimated useful lives from the date such vessel was originally delivered from the shipyard or from the date (as in the case of certain of the Company’s ATBs) a vessel was rebuilt. A vessel’s carrying value is reduced to its new cost basis (i.e., its current fair value) if a vessel impairment charge is recorded.

If the estimated economic lives assigned to the Company’s vessels prove to be too long because of new regulations, a prolonged weak market environment, a broad imposition of age restrictions by the Company’s customers, or other future events, it could result in higher depreciation expense and impairment losses in future periods related to a reduction in the useful lives of any affected vessels.

Impairment of long-lived assets - The carrying amounts of long-lived assets held and used by the Company are reviewed for potential impairment whenever events or changes in circumstances indicate that the carrying amount of a particular asset may not be fully recoverable. In such instances, the requirement for impairment could be triggered if the estimate of the undiscounted future cash flows expected to result from the use of the asset and its eventual disposition is less than the asset’s carrying amount. This assessment is made at the individual vessel level since separately identifiable cash flow information for each vessel is available. The impairment charge, if any, would be measured as the amount by which the carrying amount of a vessel exceeded its fair value. A long-lived asset impairment charge results in a new cost basis being established for the relevant long-lived asset. See Note 10, “Fair Value of Financial Instruments, Derivatives and Fair Value Disclosures,” for further discussion on the impairment tests performed on certain of our vessels during the three years ended December 31, 2017.

Intangible assets - Intangible assets with estimable useful lives are amortized over their estimated useful lives and are reviewed for potential impairment whenever events or changes in circumstances indicate that the carrying amount of the intangible asset may be impaired. See Note 10, “Fair Value of Financial Instruments, Derivatives and Fair Value Disclosures,” for further discussion on the impairment test performed on the Company's intangible assets at December 31, 2017.


5.	Deferred finance charges - Finance charges incurred in the arrangement and amendment of debt are deferred and amortized to interest expense on either an effective interest method or straight-line basis over the life of the related debt.

Unamortized deferred finance charges of $418 and $800 relating to the OBS ABL Facility (as defined in Note 9, “Debt”) are included in other assets in the consolidated balance sheets as of December 31, 2017 and 2016, respectively. Unamortized deferred financing charges of $7,037 and $10,421 relating to the OBS Term Loan (as defined in Note 9, “Debt”) and $0 and $1,414 relating to the Unsecured Senior Notes are included in long-term debt in the consolidated balance sheets as of December 31, 2017 and 2016, respectively. At December 31, 2017, unamortized deferred financing charges of $6 relating to the Unsecured Senior Notes are included in current installments of long-term debt in the consolidated balance sheets. Interest expense relating to the amortization of deferred financing charges amounted to $5,167 in 2017, $6,005 in 2016 and $5,154 in 2015.

Revenue and expense recognition - Revenues from time charters are accounted for as operating leases and are thus recognized ratably over the rental periods of such charters, as service is performed. Under existing U.S. GAAP in 2017 and prior, voyage revenues and expenses are recognized ratably over the estimated length of each voyage, calculated on a discharge-to-discharge basis and, therefore, are allocated between reporting periods based on the relative transit time in each period. The impact of recognizing voyage expenses ratably over the length of each voyage is not materially different on a quarterly and annual basis from a method of recognizing such costs as incurred. OSG does not begin recognizing voyage revenue until a charter has been agreed to by both the Company and the customer, even if the vessel has discharged its cargo and is sailing to the anticipated load port on its next voyage.

The Company will adopt ASU No. 2014-9, Revenue from Contracts with Customers (ASC 606), on January 1, 2018. Under the new standard, the Company will recognize revenue from voyage charters ratably over the estimated length of each voyage, calculated on a load-to-discharge basis. See “Recently adopted accounting standards” below for further details.

Under voyage charters, expenses such as fuel, port charges, canal tolls, cargo handling operations and brokerage commissions are paid by the Company whereas, under time and bareboat charters, such voyage costs are generally paid by the Company’s customers.

Voyage receivables - All customers are granted credit on a short-term basis and related credit risks are considered minimal. The Company routinely reviews its voyage receivables and makes provisions for probable doubtful accounts; however, those provisions are estimates and actual results could differ from those estimates and those differences may be material. Voyage receivables are deemed uncollectible and removed from accounts receivable and the allowance for doubtful accounts when collection efforts have been exhausted.

Concentration of Credit Risk - Financial instruments that potentially subject the Company to concentrations of credit risk are voyage receivables due from charterers. With respect to voyage receivables, the Company limits its credit risk by performing ongoing credit evaluations. Voyage receivables reflected in the consolidated balance sheets as of December 31, 2017 and 2016 are net of an allowance for doubtful accounts of $682 and $70, respectively. The provisions for doubtful accounts for the years ended December 31, 2017, 2016 and 2015 were not material.

During the year ended December 31, 2017, the Company had three individual customers who accounted for 10% or more of our revenues as follows:



	Percentage of Shipping Revenue
Customer Name	2017
Andeavor	16	%
Petrobras America Inc.	15	%
Shell	10	%

During the years ended December 31, 2016 and 2015, the Company had four individual customers who accounted for 10% or more of our revenues as follows:



	Percentage of Shipping Revenue
Customer Name	2016		2015
Andeavor	16	%	15	%
Petrobras America Inc.	12	%	12	%
Shell	12	%	11	%
Marathon Petroleum Company	11	%	14	%

Derivatives - ASC 815, Derivatives and Hedging, requires the Company to recognize all derivatives on the balance sheet at fair value. Derivatives that are not effective hedges must be adjusted to fair value through earnings. If the derivative is an effective hedge, depending on the nature of the hedge, a change in the fair value of the derivative is either offset against the change in fair value of the hedged item (fair value hedge), or recognized in other comprehensive income/(loss) and reclassified into earnings in the same period or periods during which the hedge transaction affects earnings (cash flow hedge). The ineffective portion (that is, the change in fair value of the derivative that does not offset the change in fair value of the hedged item) of an effective hedge and the full amount of the change in fair value of derivative instruments that do not qualify for hedge accounting are immediately recognized in earnings.

The Company formally documents all relationships between hedging instruments and hedged items, as well as its risk-management objective and strategy for undertaking various hedge transactions. This process includes linking all derivatives that are designated as cash flow hedges to forecasted transactions. The Company also formally assesses (both at the hedge's inception and on an ongoing basis) whether the derivatives that are used in hedging transactions have been highly effective in offsetting changes in the cash flows of hedged items and whether those derivatives may be expected to remain highly effective in future periods. When it is determined that a derivative is not (or has ceased to be) highly effective as a hedge, the Company discontinues hedge accounting prospectively, as discussed below.

The Company discontinues hedge accounting prospectively when (1) it determines that the derivative is no longer effective in offsetting changes in the cash flows of a hedged item such as forecasted transactions; (2) the derivative expires or is sold, terminated, or exercised; (3) it is no longer probable that the forecasted transaction will occur; or (4) management determines that designating the derivative as a hedging instrument is no longer appropriate or desired.

When the Company discontinues hedge accounting because it is no longer probable that the forecasted transaction will occur in the originally expected period, the gain or loss on the derivative remains in accumulated other comprehensive loss and is reclassified into earnings when the forecasted transaction affects earnings. However, if it is probable that a forecasted transaction will not occur by the end of the originally specified time period or within an additional two-month period of time thereafter, the gains and losses that were accumulated in other comprehensive loss will be recognized immediately in earnings. In all situations in which hedge accounting is discontinued and the derivative remains outstanding, the Company will carry the derivative at its fair value on the balance sheet, recognizing changes in the fair value in current period earnings, unless it is designated in a new hedging relationship or terminated.

During the three years ended December 31, 2017, no ineffectiveness gains or losses were recorded in earnings relative to interest rate caps entered into by the Company or its subsidiaries that qualified for hedge accounting. Any gain or loss realized upon the early termination of an interest rate cap is recognized as an adjustment of interest expense over the shorter of the remaining term of the cap or the hedged debt. See Note 10, “Fair Value of Financial Instruments, Derivatives and Fair Value Disclosures,” for additional disclosures on the Company’s interest rate caps and other financial instruments.

10.

Income taxes - The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined based on the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date.

Net deferred tax assets are recorded to the extent the Company believes these assets will more likely than not be realized. In making such a determination, all available positive and negative evidence is considered, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. In the event the Company were to determine that it would be able to realize its deferred income tax assets in the future in excess of their net recorded amount, an adjustment would be made to the deferred tax asset valuation allowance, which would reduce the provision for income taxes in the period such determination is made.

Uncertain tax positions are recorded in accordance with ASC 740, Income Taxes, on the basis of a two-step process whereby (1) the Company first determines whether it is more likely than not that the tax positions will be sustained based on the technical merits of the position and (2) for tax positions that meet the more-likely-than-not recognition threshold, the Company recognizes the largest amount of tax benefit that is greater than 50% likely to be realized upon ultimate settlement with the related tax authority.

11.

Use of estimates - The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts of assets, liabilities, equity, revenues and expenses reported in the financial statements and accompanying notes. The most significant estimates relate to the depreciation of vessels and other property, amortization of drydocking costs, estimates used in assessing the recoverability of vessels, intangible assets and other long-lived assets, liabilities incurred relating to pension benefits, and income taxes. Actual results could differ from those estimates.

12.

Segment information - Operating segments are defined as components of an enterprise that engage in business activities. The Company has determined that it operates its business as a single segment as its chief operating decision maker and its management team make decisions about resource allocations and review and measure the Company’s results as one line of business with similar regulatory requirements, customers and commodities transported.


13.	Inventories - Inventories are included in the inventories, prepaid expenses and other current assets line item in the consolidated balance sheets. Inventories are accounted for on the first in first out basis and consist of fuel on the Company’s vessels.

14.

Recently adopted accounting standards - In August 2014, the FASB issued ASU No. 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (ASC 205), which explicitly requires management to assess an entity’s ability to continue as a going concern and disclose going concern uncertainties in connection with each annual and interim period. The new standard requires management to assess if there is substantial doubt about an entity’s ability to continue to meet its obligations within one year after the reporting date based upon management’s consideration of relevant conditions that are known (and reasonably knowable) at the issuance date. The new standard defines substantial doubt and provides example indicators. Disclosures will be required if conditions give rise to substantial doubt. However, management will need to assess if its plans will alleviate substantial doubt to determine the specific disclosures. The new standard was effective for all entities in the first annual period ending after December 15, 2016. The Company adopted this standard on December 31, 2016. The adoption of this standard had no impact to the Company’s consolidated financial statements.

In March 2016, the FASB issued ASU No. 2016-9, Improvements to Employee Share-Based Payment Accounting (ASC 718), which simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, forfeitures, classification of awards as either equity or liabilities, and classification in the statement of cash flows. The standard was effective for annual periods beginning after December 31, 2016 and interim periods within that reporting period. The Company adopted this standard on January 1, 2017 and applied the accounting prospectively. Prior periods have not been adjusted. As a result of the adoption of this accounting standard, the Company elected to account for forfeitures of share-based payments as they occur. The adoption of this accounting standard did not have a material impact to the Company’s consolidated financial statements.

Recently issued accounting standards — In March 2017, the FASB issued ASU 2017-07, Compensation — Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, that will change how employers that sponsor defined benefit pension and/or other postretirement benefit plans present the net periodic benefit cost in the income statement. Under ASU 2017-07, employers will present the service cost component of net periodic benefit cost in the same income statement line item(s) as other employee compensation costs arising from services rendered during the period. Only the service cost component will be eligible for capitalization in assets. Additionally, employers will present the other components of the net periodic benefit cost separately from the line item(s) that includes the service cost and outside of any subtotal of operating income, if one is presented. These components will not be eligible for capitalization in assets. The guidance is effective for interim and annual periods beginning after December 15, 2017 and early adoption is permitted as of the beginning of an annual period for which financial statements (interim or annual) have not been issued or made available for issuance. The guidance provides a practical expedient for disaggregating the service cost component and other components for comparative periods. The Company will adopt this standard during the first interim period beginning after December 31, 2017.

In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (ASC 230): Restricted Cash, which requires that amounts generally described as restricted cash and restricted cash equivalents be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The standard will be effective for annual periods beginning after December 31, 2017 and interim periods within that reporting period. The Company will adopt this standard during the first interim period beginning after December 31, 2017.

In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (ASC 740): Intra-Entity Transfers of Assets Other Than Inventory, amending the accounting for income taxes. Under current guidance the recognition of current and deferred income taxes for an intra-entity asset transfer is prohibited until the asset has been sold to an outside party. The amended guidance eliminates the prohibition against immediate recognition of current and deferred income tax amounts associated with intra-entity transfers of assets other than inventory. This guidance is effective for interim and annual periods beginning after December 15, 2017 with early adoption permitted as of the beginning of an annual reporting period for which financial statements (interim or annual) have not been issued or made available for issuance. The requirements of the amended guidance should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Management does not expect the adoption of this accounting standard to have a material impact on the Company’s consolidated financial statements.

In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments (ASC 230), which amends the guidance in ASC 230 on the classification of certain cash receipts and payments in the statement of cash flows. The primary purpose of the ASU is to reduce the diversity in practice that has resulted from the lack of consistent principles on this topic with respect to (1) debt prepayment or debt extinguishment costs; (2) settlement of zero-coupon debt; (3) contingent consideration payments made after a business combination; (4) proceeds from the settlement of insurance claims; (5) proceeds from the settlement of corporate-owned life insurance policies; (6) distributions received from equity method investees; (7) beneficial interests in securitization transactions; and (8) separately identifiable cash flows and application of the predominance principle. The standard will be effective for interim and annual periods beginning after December 31, 2017 and early adoption is permitted. The guidance requires application using a retrospective transition method. Management is currently reviewing the impact of the adoption of this accounting standard on the Company’s consolidated financial statements.

In February 2016, the FASB issued ASU No. 2016-2, Leases (ASC 842). The standard, which requires lessees to recognize most leases on the balance sheet, is expected to increase both reported assets and liabilities. For public companies, the standard will be effective for the first interim reporting period within annual periods beginning after December 15, 2018, although early adoption is permitted. Lessees and lessors will be required to apply the new standard at the beginning of the earliest period presented in the financial statements in which they first apply the new guidance, using a modified retrospective transition method. The requirements of this standard include a significant increase in required disclosures. Management is analyzing the impact of the adoption of this guidance on the Company’s consolidated financial statements, including assessing changes that might be necessary to information technology systems, processes and internal controls to capture new data and address changes in financial reporting. In arrangements where the Company is the lessee, management expects that the Company will recognize substantial increases in reported amounts for vessels and other property and related lease liabilities upon adoption of the new standard. In arrangements where the Company is the lessor, management is currently evaluating the impact to non-lease components of time charter contracts. As of December 31, 2017, the contractual obligations for the Company’s leased vessels was approximately $253,576.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (ASC 606), to provide a single, comprehensive revenue recognition model for all contracts with customers to improve comparability within industries, across industries, and across capital markets. Subsequent to the May 2014 issuance, several clarifications and updates have been issued on this topic. The underlying principle is that an entity will recognize revenue to depict the transfer of goods or services to customers at an amount that the entity expects to be entitled to in exchange for those goods or services. The Company adopted ASC 606 effective January 1, 2018 using the modified retrospective transition method which will be applied to existing contracts as of that date.

Upon adoption, the Company will recognize the cumulative effect of adopting this guidance as an adjustment to the 2018 opening balance of retained earnings. Prior periods will not be retrospectively adjusted. The Company has completed in-depth reviews over existing contracts. The Company is substantially complete with the analysis and does not expect the adoption of this standard to have a material impact on the consolidated financial statements. The Company has implemented changes to systems, processes and internal controls to meet the standard’s updated reporting and disclosure requirements. The impact of adopting the new standard will primarily relate to a change in the timing of revenue recognition for voyage charter contracts. In the past, the Company recognized revenue from voyage charters ratably over the estimated length of each voyage, calculated on a discharge-to-discharge basis. Under the new standard, the Company will recognize revenue from voyage charters ratably over the estimated length of each voyage, calculated on a load-to-discharge basis. In addition, the adoption of ASC 606 will result in a corresponding change in the timing of recognition of voyage expenses for voyage charter contracts. The Company continues to evaluate the impact of the standard as it relates to non-lease components of time charter contracts and will finalize its position when the FASB’s Proposed Accounting Standards Update - Leases (Topic 842): Targeted Improvements becomes final.