Canvas製海錨について(日本航海学会第15回講演会)

抄録

As well known, Sea Anchors are effective not only to keep ships to the wind and sea but to lessen leeway. So the use of them are advocated by many writers on Seamanship, especially with small ships. However, there are some considerable problems for the practical use, that is, Sea Anchors must be large enough and strong enough to be effective and easy to handle. We know various kinds of Sea Anchors, e.g., Sea-Kite, Conical, Parachute, Multiplane, Fishing Nets, Spar and etc. On the size of Sea Anchor, it is said the diagonal length of Sea-Kite type requires about I/2B, and only Conical type for Life Boat is stipulated in Japan. In this paper, authors researched on some types of Canvas Sea Anchors and described some characteristics of them.