The result of data analysis from 70 survey samples for squid catching vessels in Thuy Nguyen district, Hai Phong city shows that, offshore squid catching is currently operating relatively efficiently. The average revenue of 835.5 million VND/vessel/year, the average profit of 150.1 million VND/vessel/year is equivalent to 18 percent of gross revenue, which tends to and increased according to the vessel s engine capacity. Catching efficiency and the cost benefit ratio in the group of larger capacity vessels is higher than those of small capacity vessels and a payback period of the larger capacity vessels is also faster.