Ardmore Shipping has struck a $173m deal to buy six medium-range (MR) products and chemical tankers.

The New York-listed company also announced a share offering to fund the deal, which will increase the size of its fleet to 28 tankers.

Ardmore did not disclose details on the eco-design vessels, other than to say that they have an average age of 2.4 years.

Ireland-headquartered