球状船首付瘠型船型「山城丸」と普通型船型「山梨丸」運航実績比較
1965 年 1965 巻 118 号 p. 125-137
詳細
1965 年 1965 巻 118 号 p. 125-137
M. S. Yamanashi Maru, the first of so called “super high speed” vessels of Japan, was built in October 1962, length 150 meters and main engine out-put 17, 500 B. H. P., the service speed at full load condition was 19.7 knots.
In November 1963, the second vessel “Yamashiro Maru” was completed, 150 meters and main engine out-put only 13, 000 B. H. P., the service speed at full load condition was 19.5 knots. She was designed to gain a high speed even if with low power by the adoption of a new ship-form with a bulbous bow. We were greatly concerned to see if she is capable of navigational performances as designed, approximately same as those of m. s. Yamanashi Maru with an engine output less 4, 500 B. H. P. Upon completion, both vessels were placed in the regular liner service for Europe and we compared their navigational performances on four voyages.
The result of analysis proved that the Yamashiro Maru showed the successful navigational performances approximately same as that of the Yamanashi Maru, so the “Yamashiro Maru” exceedingly surpassed the “Yamanashi Maru” from the economical view-point.
