ships operated along the trade route from New York to London, which 

 has a length of about 6000 km and a width of about 100 km, interpolation 

 from the above table indicates that the gross activity for a single dis- 

 charge should not exceed 310 curies for fishing areas of the open sea, 

 and should not exceed 2200 curies for non-fishing areas of the open sea. 



As a result of the recommendations made for the continental 

 shelf, there will likely be some bias in the distribution of such releases 

 in the open sea which would result in a somewhat greater concentration 

 of discharges near the continental slopes. The recommendations for 

 the open sea (Zones 4a and 4b) which are given below reflect this 

 possibility. 



Recommendation 9 : Spent ion exchange resins from nuclear -powered 

 ships may be discharged into the waters of the open sea at distances of 

 more than 12 miles from shore and in depths greater than 200 fathoms 

 provided that the gross activity of a single such discharge does not ex- 

 ceed 500 curies, that the frequency of such discharges from a single 

 ship does not exceed one per month, and finally, that no such releases 

 be made into the major designated oceanic fishing areas. Discharge 

 may be nnade only when the ship is underway and is more than three 

 miles from any neighboring vessel. 



In view of the distinctions made in these recommendations be- 

 tween fishing areas and non-fishing areas, a further recommendation is 

 required. 



Recommendation 10 : The Bureau of Commercial Fisheries of the Fish 

 and Wildlife Service should prepare a chart of the world oceans, showing 

 those areas of the continental shelf and open sea which should be con- 

 sidered as comnnercial fishing areas. This chart should be issued by the 

 Coast and Geodetic Survey and by the Hydrographic Office, and should 

 be utilized by officers of nuclear -powered ships in carrying out the 

 recommendations pertaining to the outer continental shelf and to the 

 open sea given above. 



Finally, this working panel makes the following recomnnendation 

 regarding monitoring and registry: 



Recomnnendation 11 : Immediate steps should be taken to initiate the 

 proposals contained in the section of this report entitled "Monitoring 

 and Record Keeping". 



