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Toph said..MorningBird said..
Yes extreme circumstances can overwhelm the best prepared sailor, but the vast majority of SARs are for people who should not be out there.
I have several friends who have been flight crew for Aerorescue over the years and they claim that the majority of their sea searches are from people that just want to get off (fatigued) acknowledging that that on itself may be part of either not being prepared or should not have been out there.
I think but have no evidence, that the reason for rescue will change with the range of the rescue agencies.
For simplicity, three ranges:
VMR and Police -near coastal
Rotary wing - dependent on type, let's say up to 200Nm off the coast
Ship -at greater ranges.
The rescues I have been involved in were all 500-1500Nm off the coast of Australia. Every one was due to a significant mechanical defect of the yacht (dismasting and insufficient fuel to motor to port, etc). I haven't personally been involved where someone was injured or mentally had enough.
Sailors have to be committed and prepared to be that far offshore and in the Southern Ocean.
I perceive the Aerorescue team have responsibility for the area where sailors are venturing out stretching their bounds. That may be one of the reasons for the type of rescues they see?
One thing that I think hasn't been recognised is there will be more long range ship rescues around Australia in the future. In the past there was Seaking and Seahawks which had the ability to hold multiple passengers winched up. Typically the destroyer or frigate steamed towards the rescue and when in range launched the helo to pick the people up. The Seaking is gone. The new Seahawk is far more focused on warfighting and can only carry one passenger. So the helo must now transfer one passenger at a time back to the ship. The rescues will now take a lot longer as effectively the helo will have a shorter range for the ferry runs.
Hopefully an amphibious ship is in the vicinity of the yacht with a Black Hawk, fitted with external jugs, Black Hawks still hold the world record for the longest rotary wing rescue and can winch up many.