The first unit, the 28,800-dwt Cape Spencer (built 1997), has already been committed to Chinese buyers for $2.4m, market sources said last week.

Now brokers say a further two sisterships — the Castle Island and Cape Scott (both built 1997) — have also been circulated for sale.

All three ships were built at Shin Kurushima Dockyard and are under technical management of Cyprus’s Marlow Navigation on behalf of their unknown owners.

They