Abstract
The observation for surface current in the west Aleutian Is. and south eastern Kamchatka waters was made by the S. S. Kyoho-Maru, salmon factory ship of Nichiro Fisheries Company, during 1953 and 1954 seasons for the purpose of investigation of driftage and direction while she has been floating and also the movement of salmon school. The method used on the observation is the same to that employed in the 1953 fishing season (see Vol. 20, No. 7 of this Bulletin) The results of the present investigation are concluded as follows: -
1) The direction and velocity of surface currents in offshore waters have no small variation.
2) Velocity is found ordinarily under 1.0 mile per hour.
3) East ward current is rare in the south off west Aleutian Is. SW_, W_, NW_, and N-ward currents are dominant in the sea between longitudes 162° E and 170° E. Also SW_, W_, and N ward currents occur more frequently than those of other direction in the waters off southeastern Kamchatka.
But we are now not in a position to know sufficiently on the surface current of such sea areas, since the direction and velocity of the current are so considerably variable. More detailed knowledge on these problems will be taken after an accumulation of authentic data in future days.
