Costamare is issuing series E preferred shares at a cost of $25 per share in a public offering.

The New York-listed shipowner plans to use the offering's net proceeds for general corporate purposes, including vessel acquisitions or investments and debt repayments.

The number of shares being offered by the Costis Constantakopoulus-led company has not been disclosed.

Members of the Constantakopoulos family, the stock's major shareholders, are ready to take $7.5m