APPENDIX IIL 
MATRIX SHOWING RELATIONSHIP OF NUMBERS OF 
OCEAN SURVEY SHIPS TO THE ANTICIPATED WORK 
THEY CAN ACCOMPLISH UNDERWAY WITHIN VARIOUS 
FINITE PERIODS OF TIME. 
The matrix which follows has been developed to give some 
idea of the amount of underway oceanographic survey operations 
that might be accomplished with various numbers of ships work- 
ING Or Varloussninice perdods (oh tame. 
The following assumptions have been made in arriving at 
these estimates: 
1. The ocean area of 104,817,800 square nautical miles is 
represented by a square, 10,238 nautical miles on a side. 
2. All ships operate at sea 240 days per year. 
3. All ships steam continuously at an average speed of 
10 knots. 
4, Ten per cent of the work of each ship is devoted to 
running crosslines. These are not included in the figures 
given. 
5. Oceanographic station operations will not be carried 
out by these ships. 
The upper number in each block of the matrix indicates 
how many linear nautical miles of survey will have been run 
by the end of the year shown at the left margin using the 
total number of ships shown at the top. Similarly, the lower 
number in each block indicates the spacing (in nautical miles) 
ST 
