Japan's Namura Shipbuilding is making inroads into Greece during its efforts to garner clients to build up a kamsarmax orderbook, sources close to the company said.

Two Greek shipowners have booked as many as six kamsarmaxes at Namura amid continued talks with others, according to international shipbrokers.

However, the companies in question, Vrontados Shipping and Pleiades Shipping Agents, would not confirm the orders.