Reconciliation of Non-U.S. GAAP Financial MeasuresA. Adjusted EBITDA Adjusted EBITDA represents Net income (loss) before interest income and expense including amortization of deferred finance costs, realized and unrealized gain (loss) on derivatives, income taxes, depreciation, amortization and impairment charges. Adjusted EBITDA is a non-US GAAP quantitative measure used to assist in the assessment of the Company's ability to generate cash from its operations. We believe that the presentation of Adjusted EBITDA is useful to investors because it is frequently used by securities analysts, investors and other interested parties in the evaluation of companies in our industry. Adjusted EBITDA is not defined in US GAAP and should not be considered to be an alternate to Net income (loss) or any other financial metric required by such accounting principles.
|ADJUSTED EBITDA - UNAUDITED|
|(thousands of U.S. dollars)|
|Dec 31,||Dec 31,||Dec 31,||Dec 31,|
|Realized loss on interest rate derivatives||4,663||4,788||18,402||19,393|
|Unrealized (gain) loss on interest rate derivatives||(4,650)||(4,049)||(9,725)||881|