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FTL Design
History of the Atlantic Cable & Submarine Telegraphy

1973 BRACAN-1 (Brazil - Canary Islands) Cable
Attachment 8.6

OCEANOGRAPHIC STATION DATA
1. RC denotes a station on initial survey run (Recife to Gran Canaria)
2. CR denotes a station on second survey run (Gran Canaria to Recife)
3. 2RC denotes a station on final survey run (Recife to ran Canaria
Station Reference Co-ordinates Latitude South Co-ordinates Longitude West Corrected PDR Depth in fathoms Temperature Actual °C Temperature Ambient °C Sample/ Core Length (inches) Photograph Materials Comments
RC1 T1A 08 07.4 34 31.3 45 25 26.8 almost nil Coarse sand, broken shells, broken coral minimal sample adhering to corer barrel
  C1A 08 07.1 34 33.2 43          
                   
RC2 T2A 08 10.0 34 51.1 10 28.2 28 10 sand/mud on top of coarse sand/fine stones  
  C2C 08 09.6 34 51.3 9          
                   
RC3 T3A 08 09.4 34 37.4 28 27.8 27.5 8 coarse sand and ground coral, coral concretion Hard coral base with 5" coral/sand cover
  C3A                
                   
RC4 T4A 08 07.2 34 32.9 114 15.8 24.9 almost nil coarse sand, broken shell minimal sample adhering to corer barrel
  C4B     88          
                   
RC5 T5A 08 07.9 34 32.5 202 11.5 22.8 1 fine/medium sand  
  C5B     200          
                   
RC6 T6A 08 07.4 34 30.6 302 7.5 22.8 almost nil coarse sand minimal sample adhering to corer barrel
  C6A 08 07.2 34 30.5            
                   
RC7 T7A 08 06.8 34 28.4 402 5.5 24.7 18 sand/mud few shell particles  
  C7A 08 06.7 34 27.8 397          
                   
RC8 T8A 08 03.9 34 24.6 498 4.1 26 54 grey/brown mud, coral particles coral particles finely broken
  C8A     497          
                   
RC9 T9C 08 01.5 34 10.5 621 3.9 25 none taken    
  C9                
                   
RC10 T10C 07 59.9 34 07.9 757 4 25 none taken    
  C10                
RC11 T11 07 59.0 34 07.5 790 none taken none taken almost nil brown mud, sand and minute shell particles  
  C11A                
                   
RC12 T12B 07 57.9 34 04.7 900 none obtained 66   grey/brown mud thermometer failed to reverse
  C12A 07 58.9 34 03.6 922          
                   
RC13 T13B 07 58.5 34 03.0 1037 3.9 23.9 none taken   thermometer failed to reverse
  C13                
                   
RC14 T14B 07 59.8 34 01.9 1125 3.7 25 18 compact fine sand  
  C14B 07 57.7 34 01.8 1289          
                   
RC15 Tl5                
  Cl5                
  K1 08 12.1 33 50.2 1743 none taken none taken   featureless abyssal ooze camera drop at base of Recife Continental Slope
                   
RC16 Tl6A 08 13.4 33 47.2 2118 2.3 24.6 none taken    
  Cl6                
                   
RC17 Tl7A 08 12.6 33 51.4 1523 2.8 24 none taken    
  C17                
                   
RC18 Tl8                
  C18                
  K2 08 08.1 34 32.0 87 none taken none taken   mud/sand on broken coral bed camera drop on first bank out of Recife
                   
Mid Atlantic Ridge                  
                   
RC19 Tl9A 01 44.9 29 19.2 2695 0.8 22 69 soft grey/brown green mud  
  Cl9A 01 45.7 29 18.6 2647          
                   
RC20 T20A 01 17.8 29 25.4 2299 1.8 24 69 light brown soft mud, trace fine sand  
  C20A         2329      
                   
RC21 T21A 01 04.2 29 13.0 2016          
  C21A 01 04.5 29 12.4 2081 2.5 25. 5 63 yellow/brown mud, sand photographs show featureless abyssal mud
  K3 01 04.7 29 13.0 1873          
                   
RC22 T22A 00 55.3 29 04.6 1965 2.6 21.8 48 grey/brown clay with grit particles grit particles possibly volcanic in origin
  C22A     1979          
    North West            
                   
RC23 T23                
  C23 00 54.2 28 35.2 1423 None taken taken   mud, sand slight trace scouring camera drop on feature close to route
  K4                
                   
RC24 T24                
  C24A 00 38.8 28 35.1 1950 None taken 48 grey mud with grit particles grit particles possibly volcanic in origin, photographs show featureless mud with some small particles
  K5 00 38.7 28 35.9 2025          
                   
RC25 T25                
  C25A 00 54.2 28 36.0 1362 None taken 30    
  K6 00 54.3 28 36.2 1356          
                   
Arinaga Approaches                  
                   
CR1 T1A 27 50.7 15 234 11 19.8 21.4 10 small stones, gravel, coarse sand  
  C1A 27 50.9 15 23.4 9          
                   
CR2 T2A 27 49.5 15 22-4 31 19.9 21 18 grey mud, small stones, coarse sand  
  C2A 27 49.5 15 22.3 32          
                   
CR3 T3A 27 45.6 15 18.6 215          
  C3A 27 45.4 15 18.6 231 13.2 17.7 almost nil coarse sand photographs show mixed coarse/medium sand
  K1                
                   
CR4 T4A 27 44.4 15 17.7 630 7.4 18 almost nil hard particles, possibly volcanic mouth of cover damaged by impact
  C4A 27 44.5 15 17.7 583          
                   
CR5 T5A 27 41.7 15 18.9 934 5 18 36 fine mud on top of mud/stones  
  C5A       968        
CR6 T6A 27 38.0 15 17.9 1112 42 16.5 30 brown mud, few grit particles  
  C6A       1115        
                   
CR7 T7A                
  C7A 27 31.5 15 19.0 1288 3.3 18.2 12 brown mud, few grit particles  
                   
CR8 T8A 27 27.9 15 18.8   2.9 18.8 none taken    
  C8                
                   
CR9 T9A 27 17.5 15 24.0 1606 2.8 17.5 none taken    
  C9                
                   
2RC1 T1A 00 10.0 28 50.5 2299 1.7 24.4 none taken Mid-Atlantic Ridge  
  C1                
                   
2RC2 T2A 01 00.8 28 35.2 1392 3.1 21 none taken Mid-Atlantic Ridge  
  C2                
                   
2RC3 T3A 02 01 28 11 1842 2.6 23 none taken Mid-Atlantic Ridge  
  C3                
                   
2 RC4 T4                
  C4A 04 34.4 26 47.6 2209 none taken 54 brown clay/mud core drop close to top of steep slope
                   
2RC5 T5A 12 16.6 22 47.8 2737          
  C5-       2.3 21.7 none taken   confirmatory station for NODC data in Cape Verde basin
                   
2RC6 T6B 27 47.9 15 19.5 92          
  C6       16.7 20 none taken   Arinaga approaches
                   
2RC7 T7A 27 48.3 15 19.9 51          
  C7       17.6 19.7 none taken   Arinaga approaches

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Last revised: 10 September, 2005

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