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42. Jahresbericht Deutsches Hydrographisches Institut 1987 
The chart portfolio published 1 new chart, 146 new editions, 116 up-dated reprints, 
and 113 overlay blocks. Four nautical charts were withdrawn. The work for the 
International Chart Portfolio was continued. Six chart series for sport boats 
appeared as new editions. 
In preparation for - and in implementation of - resolutions made by the 2nd 
International Conference for the Protection of the North Sea, intensified investiga 
tions for the monitoring of the North Sea and the Baltic Sea for radioactivity and 
other important groups of injurious impurities took place. 
The Meeresumwelt-Datenbank (MUDAB) (Marine Environment Data Bank) into 
which the entire Federal German data contributions to international and national 
monitoring and research programmes are intended to flow, has been established. 
Joint geophysical-geological investigations in the southern and eastern North Sea 
were commenced with the North Sea neighbouring countries in order to chart the 
latest geological formation - the Quarternary Period. 
Numerous type-tests and type-approvals were verified - amongst others, those of 
magnetic and gyro compasses, automatic steering systems, echo sounders, posi 
tion lights, accoustic signal systems, radio direction-finding systems and inte 
grated navigation systems - and the nautical suitability of distress radio systems. 
Permits were granted for the installation or arrangement of certain nautical 
systems and pieces of equipment on board Federal German Ships, the compliance 
with which was controlled on 454 ships. 
On 665 ships, the compliance with the Ship Safety Regulations with regard to the 
nautical systems, pieces of equipment, and instruments was supervised. 
The DHI issued 4 permits for dumping and 2 permits for incineration of wastes 
upon the High Seas, and 10 permits for research actions in the region of the 
continental shelf of the Federal Republic of Germany. In connection with infringe 
ments against the obligation to keep Oil Record Books, 185 preliminary legal 
proceedings were instituted. In the majority of cases fines were imposed. 
Numerous reports concerning important nautical observations, which had been 
sent in from voluntary collaborators, were evaluated. Several worthly captains, 
ship’s officers, radio officers, and other voluntary collaborators were awarded 
prizes of books.