Steph H Posted September 15, 2020 Report Share Posted September 15, 2020 There is probably an explanation for this but I can't think of it. Why are marina entrances so narrow? Link to comment Share on other sites More sharing options...
matty40s Posted September 15, 2020 Report Share Posted September 15, 2020 4 minutes ago, Steph H said: There is probably an explanation for this but I can't think of it. Why are marina entrances so narrow? Because normally the marina is dug out before connection to the canal. When the final removal of the bund takes place, it is normally only a diggers stretch from both sides wide. 1 Link to comment Share on other sites More sharing options...
robtheplod Posted September 15, 2020 Report Share Posted September 15, 2020 7 minutes ago, matty40s said: Because normally the marina is dug out before connection to the canal. When the final removal of the bund takes place, it is normally only a diggers stretch from both sides wide. That sounds like it could be true, but in reality its so people can watch you try to navigate in. Some Marina's I swear have score cards that they hand out... I'd love to see a new Marina when they let the water in - it must be up there with one of the best parts of a job! I presume they have to do it slowly though so the local canal doesn't run dry ... maybe have people at any locks also to open paddles?? Link to comment Share on other sites More sharing options...
matty40s Posted September 15, 2020 Report Share Posted September 15, 2020 It is generally done very slowly usually by pump , and the bund is left in place whilst it fills. Then 2 weeks minimum with no water being let in to test the waterproofness of the construction. Only then is the bund removed...very unspectacular. 3 1 Link to comment Share on other sites More sharing options...
robtheplod Posted September 15, 2020 Report Share Posted September 15, 2020 Just now, matty40s said: It is generally done very slowly usually by pump , and the bund is left in place whilst it fills. Then 2 weeks minimum with no water being let in to test the waterproofness of the construction. Only then is the bund removed...very unspectacular. ok i take it back, sounds like its a bit boring.... i had visions of having a surfboard handy!! 3 Link to comment Share on other sites More sharing options...
David Mack Posted September 15, 2020 Report Share Posted September 15, 2020 And CRT require that before the marina is finally connected, a leakage test is carried out to show that it is watertight. To do this two sets of stop planks are placed across the entrance and the space between them is pumped out (so it is clear no water is leaking through the planks). This is maintained for a period of time, and the drop in level of the marina has to be less than a certain amount. So a marina entrance is needed which can take two sets of stop planks. And that will be relatively narrow. Link to comment Share on other sites More sharing options...
Momac Posted September 15, 2020 Report Share Posted September 15, 2020 Perhaps the gap is narrow so the gap could be filled in at relatively modest cost if the marina should cease to be a marina? Link to comment Share on other sites More sharing options...
RS2021 Posted September 15, 2020 Report Share Posted September 15, 2020 Also allows for stop planks/coffer dams to be installed easily should the main canal need to be drained for any reason. Link to comment Share on other sites More sharing options...
Popular Post mrsmelly Posted September 15, 2020 Popular Post Report Share Posted September 15, 2020 All wrong so far. It's actually to stop numpties with wide beams escaping out of the marina when moored in stupid locations like the North Oxford etc. 4 1 7 Link to comment Share on other sites More sharing options...
Alan de Enfield Posted September 15, 2020 Report Share Posted September 15, 2020 18 minutes ago, mrsmelly said: All wrong so far. It's actually to stop numpties with wide beams escaping out of the marina when moored in stupid locations like the North Oxford etc. Beat me to it by 17 minutes. 2 Link to comment Share on other sites More sharing options...
Jen-in-Wellies Posted September 15, 2020 Report Share Posted September 15, 2020 3 hours ago, David Mack said: And CRT require that before the marina is finally connected, a leakage test is carried out to show that it is watertight. To do this two sets of stop planks are placed across the entrance and the space between them is pumped out (so it is clear no water is leaking through the planks). This is maintained for a period of time, and the drop in level of the marina has to be less than a certain amount. So a marina entrance is needed which can take two sets of stop planks. And that will be relatively narrow. No, completely wrong. Here is a picture of how the stop planks for a new marina are usually "removed" and the marina filled. ? 1 3 Link to comment Share on other sites More sharing options...
koukouvagia Posted September 15, 2020 Report Share Posted September 15, 2020 When Peter Topping had Cowroast Marina dug out he bought a rather nice historic bridge to span the entrance. I can't remember where it originally came from. This determined the width of the entrance. A few years ago we nearby moorers watched a widebeam get well and truly stuck in the entrance, because the then owner of Cowroast gave the boater the wrong dimensions. Oops! Link to comment Share on other sites More sharing options...
Steph H Posted September 15, 2020 Author Report Share Posted September 15, 2020 Some great replies thank you. As a fairly new boater I've just found it difficult getting into a marina at times and its rather off putting when marina staff look at you like your an idiot, so just wondered what the reasoning was. Now when I go into one I'll be marking myself out of 10 and humming the Dam Busters music ?? 1 Link to comment Share on other sites More sharing options...
TheBiscuits Posted September 15, 2020 Report Share Posted September 15, 2020 1 minute ago, Steph H said: As a fairly new boater I've just found it difficult getting into a marina at times and its rather off putting when marina staff look at you like your an idiot Move to Venetian, problem solved! Link to comment Share on other sites More sharing options...
Machpoint005 Posted September 15, 2020 Report Share Posted September 15, 2020 (edited) 17 minutes ago, Steph H said: >> As a fairly new boater I've just found it difficult getting into a marina at times and its rather off putting when marina staff look at you like your an idiot, so just wondered what the reasoning was. << Don't worry about it. I've seen boats with bow thrusters making a pig's ear of our marina entrance. It takes practice, and there is only one way to do that! Edited September 15, 2020 by Machpoint005 Link to comment Share on other sites More sharing options...
Nightwatch Posted September 15, 2020 Report Share Posted September 15, 2020 When I in the RN and the ship was in dry dock, always interesting to see the sea stopping the dry dock not being a dry dock. Intensional of course. Then the gradual movement of the ship becoming a ship again. I get the same enjoyment with narrow boats. Is it just me? 1 Link to comment Share on other sites More sharing options...
Higgs Posted September 15, 2020 Report Share Posted September 15, 2020 2 minutes ago, Nightwatch said: When I in the RN and the ship was in dry dock, always interesting to see the sea stopping the dry dock not being a dry dock. Intensional of course. Then the gradual movement of the ship becoming a ship again. I get the same enjoyment with narrow boats. Is it just me? It's certainly good to feel the boat float again, after an odd still week on the blocks in a dry dock. Link to comment Share on other sites More sharing options...
Stilllearning Posted September 15, 2020 Report Share Posted September 15, 2020 1 hour ago, Steph H said: Some great replies thank you. As a fairly new boater I've just found it difficult getting into a marina at times and its rather off putting when marina staff look at you like your an idiot, so just wondered what the reasoning was. Now when I go into one I'll be marking myself out of 10 and humming the Dam Busters music ?? Speaking as an ex marina worker, we aren’t much better at it, especially when there’s an audience of co workers. Some entrances are worse than others, but the only suggestion I could make would be to go as slow as is practical, depending on the strength of the wind or any other factors such as current. Ignore any other boater who wants you to hurry up and do it at your own pace. There’s one marina I can think of that can only be got into bows first from one direction, if you boat is over 55 ft. We found that out when we got there.... Link to comment Share on other sites More sharing options...
mrsmelly Posted September 15, 2020 Report Share Posted September 15, 2020 53 minutes ago, Nightwatch said: When I in the RN and the ship was in dry dock, always interesting to see the sea stopping the dry dock not being a dry dock. Intensional of course. Then the gradual movement of the ship becoming a ship again. I get the same enjoyment with narrow boats. Is it just me? It's just you ? Iirc when lifting in dry dock in Gibraltar after repairs and new props there was little movement. Also I was on the first frigate ever to dock in the new frigate complex at devonport in 77 on HMS Galatea and again smooth as silk. However I spose its to be expected unlike the toy boats we now own lol. Link to comment Share on other sites More sharing options...
Nightwatch Posted September 15, 2020 Report Share Posted September 15, 2020 You had more than 1 war canoe! Link to comment Share on other sites More sharing options...
Guest Posted September 15, 2020 Report Share Posted September 15, 2020 9 hours ago, robtheplod said: ok i take it back, sounds like its a bit boring.... i had visions of having a surfboard handy!! Drawing that ammount of water in one go would have a pretty serious effect on the adjoining canal. Link to comment Share on other sites More sharing options...
robtheplod Posted September 15, 2020 Report Share Posted September 15, 2020 Just now, The Happy Nomad said: Drawing that ammount of water in one go would have a pretty serious effect on the adjoining canal. indeed... Alton Towers moment, until the water runs out... Link to comment Share on other sites More sharing options...
Guest Posted September 15, 2020 Report Share Posted September 15, 2020 9 hours ago, robtheplod said: That sounds like it could be true, but in reality its so people can watch you try to navigate in. Some Marina's I swear have score cards that they hand out... I'd love to see a new Marina when they let the water in - it must be up there with one of the best parts of a job! I presume they have to do it slowly though so the local canal doesn't run dry ... maybe have people at any locks also to open paddles?? There used to be a video of one the newer marinas being filled, but this is the only one I can find now. Link to comment Share on other sites More sharing options...
ditchcrawler Posted September 15, 2020 Report Share Posted September 15, 2020 9 hours ago, mrsmelly said: All wrong so far. It's actually to stop numpties with wide beams escaping out of the marina when moored in stupid locations like the North Oxford etc. And Dunchurch Pools had to get special permission to have a wide entrance and long stop planks (to get the fat ones in and out) 1 Link to comment Share on other sites More sharing options...
OldGoat Posted September 15, 2020 Report Share Posted September 15, 2020 6 hours ago, Steph H said: Some great replies thank you. As a fairly new boater I've just found it difficult getting into a marina at times and its rather off putting when marina staff look at you like your an idiot, so just wondered what the reasoning was. Now when I go into one I'll be marking myself out of 10 and humming the Dam Busters music ?? Lovely - remembering folks of the past, who tend to get forgotten (B.W.'s daughter was in a snall music group in which we sang - thus a more related reminder) Link to comment Share on other sites More sharing options...
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