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Jahresbericht fir. 9/1954 
mined already previously, were checked as to their state, position and depth. 
The total number of the wrecks which could be determined by the wreck-searching 
boats in home coastal waters after the end of the World War II amounts to 700, 
wherefrom more than half could be removed or were silted up in the course of 
the years. 
The "Gauss", in accordance with a programme mutually set up with the 
coastal engineering authorities, carried out in cooperation with the "Insti 
tut für Meereskunde" of the Kiel University oceanographical work off the west 
coast of Schle swig-Holstein in order to detect the horizontal and vertical 
distribution of the water movement in relation to suspensoids in this area. 
As team-work with the PRAKLA Society a shorter trip was made to examine the 
deeper underlying strata of the German Bight by means of explosives and 
following seismic investigations. The determination, by computation, of the 
wind effect on ocean currents and on the configuration of the surface of the 
sea with non-stationary windfields was continued. 
The Institute is amply supplied by foreign stations on a reciprocal basis 
with sufficient numerical data for the compilation of the "Ergebnisse der 
erdmagnetisehen Beobachtungen" of the Wingst Observatory to adequately furnish 
shipping with data for the magnetic navigation, namely for the isogonio 
charts, the texts in sailing directions and for the compass cards in charts. 
The magnetic service renders indirect more and more considerable advantages 
to shipping as the quality of the radio communication can be judged by the 
rate pf the disturbance ofthe geomagnetic unrest. Relevant messages of the 
Wingst Observatory are to be regarded partly as being representative for 
Western Europe and ’are broadcast within the scope of the URSI transmissions 
several times daily via radio Paris. 
The annual set 1956 of the Tide Tables which is being prepared will for 
the first time bring again data for the western part of the Indian Ocean. 
The endeavours to publish these tables earlier as in the last years were im 
peded due to the working situation at Department II and due to the handling 
of international exchange; efforts to this end are continued, however, with 
all possible means. 
The Storm Surge and Warning Service was often claimed besides its main 
customers by coastal shipping to be able to fix the load depths, or by 
dockyards if a ship was to be launched or docked. 
The removal into the new office building gave rise to a thorough general 
overhaul of the large Tide Predicting Machine. The work which was carried 
out with great care by the Institute's own workshop, took more than half a 
year. 
The working up, by punch cards machines, of data for the German sea 
transport statistics which is carried out for some years by the G.H.I. on 
behalf of the "Bundesverkehrsministerium 11 (Ministry of Transport) could be