The Deutsches Hydrographisches Institut (PHI) in 1984 
117 
the NOAMP work was continued. 
The Research Vessel "Gaufi" - during 17 voyages - monitored, as routine, 
the seawater for injurious impurities, and carried out oceanographic, 
geological, and geophysical investigations in the North Sea and the 
Baltic Sea as well as type-testing. 
The Survey and Research Ship "Komet" and the Survey Ship "Siideroog" ran 
15,105 nautical miles of soundings in the North Sea and the Baltic Sea 
for the hydrographic survey. 
For wreck search and control, the Survey and Wreck Search Ships "Atair" 
and "Wega" have checked 142 already known wrecks and positions at which 
submarine hindrances were suspected, and thereby found 54 new wrecks.