SYSTEM DESIGN NEWFOUNDLAND-NOVA SCOTIA LINK 



219 



to the Atlantic crossing and the desire to follow a transatlantic route to 

 the north of existing telegraph cables.^ There were a number of possi- 

 bilities for the route between Clarenville and the east coast of Cape Bre- 

 ton Island, the most easterly point which could be reached reliably by 

 the radio-relay system through the Maritime Provinces of Canada. 

 One possibility, which had been considered earlier, was to cross New- 

 foundland by a radio-relay system and to employ a submarine-cable link 

 across Cabot Strait only. The final decision to build a cable system 

 between Clarenville and Sydney Mines raised a number of problems 

 in respect of the route to be followed, concerned primarily with poten- 

 tial hazards to the cable brought about by: 



(a) The existence of very extensive trawling grounds on the New- 

 foundland Banks. 



(b) The location of considerable numbers of telegraph cables in the 

 vicinity. 



(c) Grounding icebergs. 



The route finally selected after thorough on-the-spot investiga- 

 tions^' ^' ^ (Fig. 1) is satisfactory in respect of all these hazards, in- 

 volving no cable crossings and being inshore of the main fishing grounds. 

 The straight-line diagram of the route is shown in Fig. 2; the total cable 

 length is 326 nautical miles, of which 54.8 nautical miles are between 

 Clarenville and Terrenceville, Newfoundland, where the cable finally 

 enters the sea. The maximum depth of water involved is about 260 

 fathoms. 



QUEENS COVE 

 S. W. ARM 



TERRENCEVILLE 



R2 



PLACENTIA BAY 



y 



R1 



h— - 



-12.31 



•-K- 



20.02- 



ADEYTOWN 



RANDOM 

 /SOUND 



HILLVIEW 



t i 



CLARENVILLE 



-K 



22.52 



H 



SYDNEY 



f«---1l.68-^»|< -)f -- ^^ ^ - 6.094 --*j«-- -5.707 >j< ^ 4*--2.932 >| 



Fig. 2 — Straight-line diagram of route. R. Repeater. E. Equalizer. All dis- 

 tances are in nautical mile,s. 



♦Repeater spacing R3-R9 and R10-R16, 20.4 n.m. 



