The New York-listed containership owner earned $30.3m in net income during the period, up from nearly $8.41m a year earlier.

Adjusted earnings per share (EPS) of $0.28 beat the average analyst projection of $0.21.

Danaos, which owns 56 boxships, said it boosted its profitability thanks in part to a $16m improvement in finance costs and a $4.5m drop in operating costs.

“The trend of reduced financing costs and, as a consequence, increased earnings, will continue through 2015 as we continue to reduce debt and benefit from the expiration of expensive interest rate swaps,” said chief executive John Coustas.

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