北太平洋に於けるSea Marginについて(日本航海学会第16回講演会)

抄録

The problem of spare bunker is a great concern not only Engineers but for ship's master. In case of a shortage, the master will be the one blamed and special attention, therefore, should be given for it. Generally, it has been accepted that 25 percent of fuel in excess of contemplated needs was sufficient quantity. The said figure, howerer, cannot be applied in all cases and should be figured out in accordance with the kind of ship, route and season respectively. The weather is the main factor to contrilbute to sea margin and in the following, a certain suggestion to the question was offered by vessels engaging in the North Pacific Ocean trade.