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Orcas in GBZ strait

In planning the navigation towards the West of the Strait of Gibikterra there are not only counter currents to consider, respect for the cargo traffic corridors and the wind which does what it wants here but also the encounter with the Orcas.
For at least 5 or 6 years, multiple encounters have been taking place, a large part of which have disastrous consequences for the rudders of sailing boats.
I've already passed twice, in 2021 and 2022 and in both directions and no meeting.

My theory is to follow the route of the cargoes and oil tankers up to more than 20 miles from the strait and then take your own direction, be it towards Spain and Portugal or Morocco and the Canary Islands.

In case of an encounter my strategy is to remove the sails and at the same time turn on the engine and go in reverse.
In this way the orcas usually attracted by the rudder which is identified as a tuna fin and then followed from behind find the keel.
In fact, orcas only attack from behind.


The Cruising Association has published this reporting portal and safety guidance:

Orca Encounters - Reporting Portal and Safety Guidance

Even in this passage, both arriving in Gibraltar and leaving for Morocco we had no encounter.
The sea conditions were long and powerful waves (period of 12/15 seconds), height 2.5/3 meters with east wind of 20 to 30 knots.
Maybe they don't like to attack in rough seas?


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