Orcas moving north

greeny said:
Be careful you don't suggest anything that may hurt those poor orcas.
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One should look to nature for inspiration on defences. If orcas are as intelligent as they are assumed to be the lateral fins on a rudder would deter them from even trying to take a bite.

Maybe combine it with a rudder paint scheme like a venomous fish to further put them off.

Seems like a much more humane solution than the suggestion of culling the orcas responsible that has been suggested by others.
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Would be interesting to see a comparison of antifoul colours - nature is good at presenting danger y showing bright colours. Do newly painted red boats get less hassle than grey coloured rudders?
 
Hermit said:
Would be interesting to see a comparison of antifoul colours - nature is good at presenting danger y showing bright colours. Do newly painted red boats get less hassle than grey coloured rudders?
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See Orca attack Specifically posts 745 and 747 (currently at just about the end of the thread). The data is available online now on the CA website but not sure if it’s available to non members - some CA stuff is, some isn’t.
 
Goodness this becoming a regular thing.
I’m planning some longer trips in the Corribiee and beginning to wonder how I might fare in one of these attacks. 21 foot bilge keeler is no match for an orca or two.
 
Athomson said:
Is it time for me to start a business offering to build shark cages around rudders? Trouble is I suspect they are only strong enough because they will move when hit. If attached to a heavy hull would a decent sized orca crush it? To make it strong enough it would be heavy and create a lot of drag. Maybe something lighter which disguised or hid the rudder... Rudder tunnels?
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Possible - our boat stopped dead in the water when we hit a basking shark.
 
Is anyone analysing the hull types of the boats attacked?

Currently, in A Coruna about to head for Falmouth. Spotted a whale south of Fisterra yesterday, but unable to identify species.
 
Sandy said:
Is anyone analysing the hull types of the boats attacked?

Currently, in A Coruna about to head for Falmouth. Spotted a whale south of Fisterra yesterday, but unable to identify species.
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Not seen any scientific analysis (of hull type) But, based on the CA / Orca Iberica site reports, plus those posted to YouTube and Facebook, the Orca have had a go at: Fin and spade (X- yacht), fin and twin (Amel), Fin and Skeg (Najad), Long (Nauticat), Lifting (Ovni) and Cat (Outremer). So hull type doesn’t seem to be a big factor - other than it’s a sailing type, with relatively large & exposed rudder(s).
Geography seems more of a factor. Had you spotted a second cluster (to the one where you are now) of 4 recent reports, (CA site) about 100 nm SW of the Bishop / 150-200nm WNW of Brest. On your Rhumb line going A Coruna to Falmouth direct. Might pay to go via Brest / Raz de Sein, to be on the safe side?
 
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Seems to be a real puzzle why this is happening. In fairly recent times they have even turned against long time trainers at shows which is probably unsurprising considering their conditions.

Like the USA , the females apparently control everything. :)
 
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