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Post by TonyDunkley on Aug 7, 2017 5:12:42 GMT
A ship heading for Gunness Wharf got stuck on the Western bank of the Trent, very close to the bridge, yesterday morning. Yesterday evening's tide was a poor one, and the tugs that have come up from Hull and Goole couldn't shift her. The tide didn't make prediction, but they're making up at the moment , with the biggest one in this set predicted for Friday morning. Next HW at Keadby is shortly after 0800 hrs this morning.
There's photo's and a video clip on the Scunthorpe Telegraph webpage, but it needs someone better with confusers than me to post them up.
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Post by JohnV on Aug 7, 2017 6:57:39 GMT
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Post by patty on Aug 7, 2017 7:47:43 GMT
oopsy daisy..still gives folks summit to look at.
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Post by peterboat on Aug 7, 2017 8:03:06 GMT
Bugger
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Post by JohnV on Aug 7, 2017 15:45:29 GMT
they got it off on the morning tide ....... I'll try and get the story from one of Deans Tugs guys
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Post by JohnV on Aug 8, 2017 18:51:29 GMT
Been talking to those concerned with getting it off the mud and onto it's berth
It appears from it's AIS track that it tried to turn round further upstream and nearer it's berth (and the bridge) than normal.
There is a small sandbank there and it put it's stern aground on this and was unable to pull itself free, the bow then swung round on the current and it ended up properly trapped and very close to the bridge.
The tugs (one big on the stern and two small ones on the bow) tried to move it earlier but it was too firmly aground so they swung it so the bow was clear of the bridge and put it's anchor out to hold it in line.
The bigger tide this morning was just enough to get it out of the trench it had made and turn it and put it alongside the jetty.
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Post by TonyDunkley on Aug 9, 2017 0:46:22 GMT
It appears from it's AIS track that it tried to turn round further upstream and nearer it's berth (and the bridge) than normal. The bigger tide this morning was just enough to get it out of the trench it had made and turn it and put it alongside the jetty. It might possibly have been forced into getting closer to Keadby Bridge than normal because of the arrival draught being very close to the limit for the predicted height of tide, John. According to the tracking info she was on 4.6m, and that wouldn't leave much of a margin of HW clearance over Keadby Top Bar only 72 hours after the smallest Neap in that set of tides. Ships bound for Gunness Wharf aim to arrive at or just before local HW with the last of the flood still running up, and they don't really have any option other than to start rounding-up over Keadby Top Bar, which is roughly a third of the way from Keadby Light to the Bridge, with Keadby Light at a little less than halfway from Keadby Lock to the Bridge. Normal practice generally there is to let the starboard anchor go at short stay passing over the Bar, swing towards the Keadby (Western) bank on it and then drop down astern onto the wharf. Mean HW Springs - around about 7.9m at Hull - make at most about 6.3m of depth over the shallowest bit of the Bar and Mean HW Neaps at most about 4.5m, so if that 6.6m tide on the Sunday didn't make predicted height, or they were a bit early at Keadby, or the tide was a bit later than predicted time, then the ship could have ended up slithering over the Bar and ploughing straight on instead of swinging when it should have. This morning's tide made 2 feet more at Keadby than the Sunday morning tide the ship got fast on.
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