Sybarite
Well-Known Member
A little knowledge may indeed be dangerous, when you're comparing boats as you usually do, feel free to tell us of your experience on Tamars and Shannons. .
Let’s just talk about the new generation boats because that is what will count in the future.
The Shannon is an excellent boat; there is no doubt about that. It is very manoeuvrable because of its twin jets.
However I have the evidence of my own eyes that the hull does not pass as well through the water as the “pantocarene” hulls of the French boats. Below I will show where this has been demonstrated conclusively.
It should be noted that the SNSM do have jet boats that operate at over 30knts. These are used advantageously for inshore rescues. The larger boats such as those sold to the Dutch can also be fitted with jets.
The new AWB (CTT) has a Pantocarene hull. It is 58’ long and has exactly the same 650hp Scania engines as the 46’ Shannon and has the same top speed. If they scale the CTT back to 2000 rpm they have an economic speed of 20-22 kts using 75 l/hr.
It should be noted that the 58’ CTT was delivered for approximately £1.1m compared with £2.1m for the 46’ Shannon. (Even forgetting the £1.5m trailor necessary to launch certain of them).
https://www.youtube.com/watch?v=lFxhFPRaEp8
Here you have some of the coxswain’s comments :
• No comparison with the old one
• Faster
• Comfortable in all sea states
• Well sound-insulated
• Sea worthy no matter from which direction the wind and waves.
• Congratulations to the architect and builders –they could not have done better....
https://www.youtube.com/watch?v=gaprFQW7nTg
Here you have a comparison between traditional type hulls such as the Carmac-inspired hull used by the Shannon and the Pantocarene.
https://www.youtube.com/watch?v=C24xDv-FmKM
Pantocarene pilot boats showing the smoothness in passing at speed.
https://www.youtube.com/watch?v=j97o4MTOEbw
Camarc designed hulls
https://www.youtube.com/watch?v=OUIulN6RvYo
Shannon in rough water
https://www.youtube.com/watch?v=QpSQejLKDNw
(See 0:20)
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