A clear renewables story is helping shipping shares fly off the shelves in a buoyant initial public offering arena in Oslo.

Car carrier owner Hoegh Autoliners and offshore wind vessel player Edda Wind look set to raise a little over $300m combined from their IPOs this month.

Both transactions were effectively more than sold out before the book-building even launched, with the companies announcing to the Oslo bourse that they were oversubscribed 15 minutes after official opening times.