[NatureNS] Whale collisions

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Date: Fri, 09 Aug 2019 18:48:31 -0500
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Because whales communicate by sonar so any man made sound renders them 
uncommunicative.

Slow the ships down!

Ian

On 2019-08-09 12:45, David Webster wrote:
> Dear All,
> 
>     With respect to Right Whales in the Gulf of St. Lawrence and means
> to prevent collisions, has any thought been given to alerting whales
> of nearby ships ?; horn.  Or alerting ships of nearby whales ?; sonar.
> 
>     Whales are intelligent and a standard code (e.g. long, long short)
> transmitted by underwater speakers every few minutes at a frequency
> within their audible range should quickly be associated with ships
> nearby.
> 
>     Slowing to 10 knots may give more time for whales to evade
> collision but why not use sonar ?
> 
> Yt DW, Kentville

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