BW Group's $197m swoop for more than a third of Navigator Holdings has led to a shake-up of the gas carrier owner's board.

The New York-listed company announced after markets closed in New York on Monday that Hal Malone had stepped down from the board on 22 December and BW Group executive Andreas Beroutsos is to replace him.

As part of the deal, BW Group will also refrain from increasing its voting power in Navigator Holdings until May 2022.