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Extending Coach Roof to "Move" hatch

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  • 28 May 2016 01:05
    Quote
    Reply # 4044249 on 4042675
    Anonymous member
    Scott Dufour wrote:
    Gary Pick wrote:

    My main hatch cover hinges up with two triangular hinge down side flaps that work quite well.


    Hey Gary,

    What do the triangular side flaps do for you?  Do you feel they funnel the airflow better?

     

    In a discussion with Slieve, he suggested that the forehatch hinge neither on the aft nor fore edge, but on the port or starboard side.  I have to admit that I don't have enough ergonomic experience either way, but a side opening swing does seem to just make sense.  Not sure why.  Anybody out there use an athwartship opening hatch? 

    Scott the side panels give me greater headroom and also allow me to get in and easier. As for airflow I'd say it would increase the airflow in a breeze over the stern. My forehatch is hinged along the aft edge. I wouldn't go for a side hinge but I can see an advantage in having it hinged on the forward edge. 
  • 27 May 2016 13:04
    Quote
    Reply # 4042675 on 4042590
    Deleted user
    Gary Pick wrote:

    My main hatch cover hinges up with two triangular hinge down side flaps that work quite well.


    Hey Gary,

    What do the triangular side flaps do for you?  Do you feel they funnel the airflow better?

     

    In a discussion with Slieve, he suggested that the forehatch hinge neither on the aft nor fore edge, but on the port or starboard side.  I have to admit that I don't have enough ergonomic experience either way, but a side opening swing does seem to just make sense.  Not sure why.  Anybody out there use an athwartship opening hatch? 

    Last modified: 27 May 2016 13:07 | Deleted user
  • 27 May 2016 10:56
    Quote
    Reply # 4042590 on 4037369
    Anonymous member

    My main hatch cover hinges up with two triangular hinge down side flaps that work quite well. My fore hatch is covered by Beetle the dinghy and so can be open in almost any weather when tied up to the dock or at anchor. It can be left open when sailing on the river as well.
  • 26 May 2016 21:54
    Quote
    Reply # 4041382 on 4040623
    Anonymous member
    Scott Dufour wrote:

    I'll have to live with the option of stars at night and the threat of condensation.  

    The only time I've found condensation from the forehatch to be an issue is when the temperature is below freezing and the hatch dogged down.  (If it's going to be like that for a long time, double glaze it with cling film and a very carefully wielded heat gun.)  I've found that as long as it's just open a tiny amount, that will solve the condensation issue.  However, I admit to being a fresh air fiend and, if possible, will usually have a washboard out, of whatever the equivalent is.  Stern to the rain is the worst time for condensation. because boats aren't usually set up for that.  If condensation does concern you, ensure that the hatch isn't directly over your head.  That way any drips will just end on the bedding and are unlikely to be sufficient to soak it. 


    But certainly, I would like to have a hatch in the boat that I can get out of in a hurry, in addition to the companionway.
    Last modified: 26 May 2016 21:55 | Anonymous member
  • 26 May 2016 13:07
    Quote
    Reply # 4040623 on 4037369
    Deleted user

    Hmm.  I'm going to have to adjust to this idea of not needing to go forward in weather - Junk rigs change things.  Gophering in bad weather is out. 

    But I really don't like the idea not having an egress option at both ends of the boat - even if it's just for pleasant weather at anchor, I need something further forward for peace of mind.  It's got to be a training thing: always know where the back door is, and make sure it's not locked from the outside. 

    I'll have to live with the option of stars at night and the threat of condensation.  

    So the good part of deciding to tear up the foredeck a bit is that I had been dreading working upside down under the bow to get at a couple of core rot spots.  Coming at it from the inside would let me preserve the external deck surface's non-skid pattern.  But since I'm making a mess up there anyway, and fairing this new structure in, I'm free to grind it out from the topside - I'll fair out the whole deck and apply aftermarket non-skid.  Scope creep strikes again.
  • 26 May 2016 06:05
    Quote
    Reply # 4039906 on 4039281
    Anonymous member
    Scott Dufour wrote:

    Thanks, Mark.

    I thought for a bit about your suggestion, and I think I need a hatch further forward.  The v-berth wants light and ventilation, and I want a way to get in front of the mast in bad weather without sneaking under the split rig in the dark.  With this setup, I'll pop up like a gopher.

    I agree with Annie. With any kind of junk rig, foredeck work at sea has been all but eliminated. OK, some kind of snarl-up or breakage is a slight possibility, but if the weather is bad enough that donning foul weather gear and harness and crawling along the weather deck on hands and knees is a daunting prospect, then it's an absolute no-no to be opening a hatch that's that far forward - there will be too much solid water flying about.

    And I disagree with Annie and agree with Mark. I will happily forgo the starlight if I can avoid drips of condensation on my face when I'm sleeping. I avoid like the plague having hatches over berths. A good dorade vent is another matter. Ventilation, certainly, above your harbour berth.

    Last modified: 26 May 2016 08:22 | Anonymous member
  • 25 May 2016 22:10
    Quote
    Reply # 4039511 on 4039281
    Anonymous member
    Scott Dufour wrote:

    Thanks, Mark.

    I thought for a bit about your suggestion, and I think I need a hatch further forward.  The v-berth wants light and ventilation, and I want a way to get in front of the mast in bad weather without sneaking under the split rig in the dark.  With this setup, I'll pop up like a gopher.


    IMHO you're dead right about having a hatch over the berth: one of the joys of living on a boat is lying in bed and looking out at the stars on a warm, summer night.  Besides, even in the middle of winter, I like to have fresh air across my face.

    On the other hand, anyone who dared to open the hatch over my berth in bad weather, especially at sea, would be keel-hauled.  That sleeping cabin is a sacred place and no water is allowed near it!!  I can see no reason to be fooling around on deck, especially forward of the mast on a junk rig, except to anchor.  And ducking under the boom is a lot easier than slithering on and around a lowered jib!
  • 25 May 2016 19:13
    Quote
    Reply # 4039281 on 4037369
    Deleted user

    Thanks, Mark.

    I thought for a bit about your suggestion, and I think I need a hatch further forward.  The v-berth wants light and ventilation, and I want a way to get in front of the mast in bad weather without sneaking under the split rig in the dark.  With this setup, I'll pop up like a gopher.
  • 25 May 2016 13:57
    Quote
    Reply # 4038576 on 4037369
    Anonymous member

    Scott, I would put the hatch behind the new mast position - in the toilet area.  It give accepatable egress, being forward of kitchen (fire risk), good ventilation to wc, no drips on V berth.

    cheers  Mark

    ps, nice looking boat, will make an attractive conversion.
  • 25 May 2016 13:18
    Quote
    Reply # 4038538 on 4037369
    Deleted user

    Thank you both Annie and David for weighing in - and I'll incorporate both of your suggestions into the design.  I was going to have to laminate/beef up something for the mast partner anyway, right in front of the mast and very near the middle of the old hatch and the aft end of the new.  It's all air there now.  So that'll fit in nicely.

    Annie, I'm in complete agreement with you about the fairing in part.  Structurally, I guess we can make anything work with enough fiberglass, plywood, and epoxy.  But aesthetically?  I've got a challenge on my hands to avoid an ugly transition.  But my first mate is a sculptor - I think dump the challenge on her. 

    I'll take lots of pictures.   

     
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