Brokers and the yard report an order for two aframaxes and two suezmaxes but TradeWinds revealed this year that one of each type had been booked already.
However, Viken Crude chairman Hans Olav Lindal now says the order has been increased to include a second ice-class aframax.
SHI puts a price of $420m on the four ships it says have been booked but, so far, it is only three.
