I know the Waverley and balmoral work to very tight tide margins in very small harbours.Touching the bottom is obviously a mistake but they really do put those ships into very tight spaces with only a matchstick clearance under the keel.
In their defence (Waverly crew) I've seen them steaming through the Narrows at Colintraive with inches (real inches) to spare on either side, with a depth below keel of about 1.5 metres....
Once met a VLCC jockey who claimed that they were often in channels with no more than a foot of water under them. Mind you, it might have been the gin talking.
It's not going through the Kyles with inches to spare that gets me, it's the speen that they do it. When sailing the Clyde and hearing her you need to do as you do with ma overboard and get someone to keep a sharp eye on her as she takes no prisoners!!!
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Once met a VLCC jockey who claimed that they were often in channels with no more than a foot of water under them. Mind you, it might have been the gin talking.
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A channel pilot told me that 1000 box container ships go in from the Texel buoy with 1 metre under the keel.
It was a bit of muppetry to go into Girvan at low water; very nasty bar at the entrance with, depending on the last storm, probably a good bit less than 6ft mlws. Clearly it was less than the necessary when the gangway was pulled in. I realise going to new places makes for a more interesting itinerary, but that doesn't abrogate the master's responsibility for the safety of the vessel and SLC. A word with the harbourmaster or a look at a pilot book would have told him to avoid Girvan 2 hours either side of low water.
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It's not going through the Kyles with inches to spare that gets me, it's the speed that they do it.
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Last time I was up that way we were experimenting with locking the autopilot to a GPS route. For fun, we had set up a route round the Kyles and through the Burnt Island passage. We were 5 minutes away from the passage when Waverly appeared coming the other way (and, as you say, fast). We stayed on lock, but slowed down to minimum speed, ready to get out of her way. Waverly cleared the passage, then headed for a jetty take on or drop some passengers. We were able to carry on on our route, which took us nicely through the middle of the passage.
I understand that Waverly is quite difficult to manoeuvre because her paddles are linked solidly together, and all the steerage comes from the rudder. Can anyone confirm that?
Waverley has to be going fairly smartly for her to steer - she only has the speed of the water going past her rudder. The faster she goes the better she answers her helm.
You are correct that the paddles are linked - one on each end of the crankshaft.
I am unaware of any paddle steamer which has independently rotating paddlewheels.
She can stop very quickly though. (even without the assistance of underwater objects. LOL)
Saw her in Oban a few years ago leaving the North pier. Went astern right across the bay and wondered if she was going to go south down the Sound of Kerera astern.
There used to be a paddle wheel tug with independant paddles in Portsmouth Harbour when I was a kid. It couldn't half manouver! We in Jim Butchers boats (the little blue ones) were dead jealous.
I think Waverly was an Isle of Wight ferry for a long time, wasn't she?
And those of you who sail the Western Isles with 50 meters under the keel, have a thought for us East Coasters who rate a meter under the keel as plenty!