Your True Waterline...

[Matt19020]

If you are thinking of mounting any windows or through holes I would stay above the Black Stripe

In a gust on a moderate day:

[bartmac]

Good photo....we had considered a port hole x 2 up front but....this demonstrates you'd have to be careful!!! The bow area would certainly cop a wave or two and in combo with heeling...might end up with very wet bed.Don't know whether I have seen a porthole in the bow area in Mods

[Highlander]

I've had the whole aft stern in the dink no problem
http://i844.photobucket.com/albums/ab1/ ... 11-3-1.jpg

as for heel go that route on a regular basis
http://s844.photobucket.com/user/TheHig ... 5.mp4.html

http://i844.photobucket.com/albums/ab1/ ... 4942-4.jpg

Or do a "Beene" an wash the boom never mind the bottom window stripe
http://s844.photobucket.com/user/TheHig ... 8.mp4.html

I will be puting windows "opening ports" 4" X 14" in the bottom stripe just aft of them actually with no concens even though I always wash them lower stripe windows when heeling , the rule is when the boat is in motion all opening ports & hatches should be closed

nice pic though u have way to go yet to expose ur dagger board

J
http://i844.photobucket.com/albums/ab1/ ... 74144e.jpg

[bartmac]

We have opening portholes in both sides fitted in the window area of Mac26X...just above the sink and one matching on the other side.....you'd have to really heel to get water there!!.....as a rule though they are closed when sailing

[seahouse]

Neat pic, Matt.

If you are thinking of mounting any windows or through holes I would stay above the Black Stripe

...Or make sure that they are properly installed, quality windows... and closed!

I've been in a sailboat when you could see under the water through the lower windows from the cockpit when heeled. It's pretty cool. I was hoping to see the look on the fishes' faces.

I'm sure it would be fantastic in clear salt water like the Caribbean.

[seahouse]

... or in Australia!

[Highlander]

Good photo....we had considered a port hole x 2 up front but....this demonstrates you'd have to be careful!!! The bow area would certainly cop a wave or two and in combo with heeling...might end up with very wet bed.Don't know whether I have seen a porthole in the bow area in Mods

While bow ports r nice if I were to install them I would go with the none opening ones , but i went this route instead an opening hatch with-in the hatch gives u the extra light in the V-Berth plus screened vetilation if needed & great for looking @ the stars on a nice evening was a very good mod in my books for me
http://i844.photobucket.com/albums/ab1/ ... 010147.jpg

http://i844.photobucket.com/albums/ab1/ ... 010148.jpg

http://i844.photobucket.com/albums/ab1/ ... 010149.jpg

http://i844.photobucket.com/albums/ab1/ ... 010150.jpg

J

[bartmac]

Its the cross flow ventilation I was looking for...so opening portholes on both sides was looking the answer...certainly works a treat in the main cabin....but then again our temps are bit higher than some of yours ie 35deg C.Have made/ installed an awning...bit of tarp a bit bigger than the front hatch and bungee cord with hooks on the end of the 4 corners...gets set up as a cover come wind catcher come rain cover

[NiceAft]

John is right on the money with

the rule is when the boat is in motion all opening ports & hatches should be closed

. We have forgotten at times, and have had a close experience or two. I told the Admiral that there is a nautical term for the consequences of leaving the ports open..............................SINKING

We have opening ports on both sides of the boat. They allow cross ventilation.



At times, we heel pretty far. Sometime even more than what you see in the picture. It's fun when you have nowhere to go, and time is not of the essence.

Photo courtesy of Matt.


Ray

[Crikey]

I've wanted to put some opening ports, at the top of the hull at the rear, where we use the double berth. Doubtless, the issue of inadvertently leaving one open would be a very big deal if I was doing that - even briefly. But still, on a hot evening the breeze, let alone the view (checking for drag in the middle of the night) still tempts me. In our house we have a sump pump with a water level alarm, in case of malfunction and subsequent flooding. I wonder if some similar strategy, or microswitch could provide an indication at the helm. I don't think anyone moves, either sail or engine without the power switch in the 'on' position so deactivation wouldn't be an issue.
However loving to play devils advocate, my scenario would probably run like this: Beep, beep, beep, beep! "Honey, we've got a lot of water inside!" "Whaaat?" "I said, we've got a lot of water inside!" "Whaaaat? I can't hear you!" "Can you turn that damn thing off?" " OK, what did you say?" " I said - we're SINKING!"
R.

[Tomfoolery]

I put a small round vent in the head port, and there's no way to close it. If the boat heels enough for water to enter, it'll be coming over the coaming and I'm in deep guano anyway, so I don't care. But it does keep the head much fresher, and there's enough space around the door that there's no real restriction to air flow. I just don't like the looks of that SS bulls-eye on the side, so I may swap it out for a black plastic one some day. After I take care of more pressing issues, of which there are many (of course).

[Catigale]

I recall Fran on this forum swamped a boat probably attributable to open portholes, so having them closed and dogged underway is prudent

[NiceAft]

If I remember correctly, this happened while her boat was slipped, and there had been some bad weather.

[Tomfoolery]

If I remember correctly, this happened while her boat was slipped, and there had been some bad weather.

Wow. Any details on that?

I had an A7.0, which had a cockpit drain that looked like a bathroom sink tailpiece (probably was) with one of those super cheap white plastic corrugated hoses. Which cracked. And started to fill the boat as it rained. If it had settled much further before I noticed it, the through-hull would have been under water, and that would have been all she wrote other than a call to the salvage company.

I'm always curious about these sorts of things, as other folks' problems and near-misses make me think about where I may be going wrong, or where I should be looking for something to go wrong.

[Crikey]

OK, my own stupid joke made me actually resort to thinking about this and I'm now wondering if 50 bucks or so is worth a little MacGregor mod? Elsewhere I described my use of the built-in water faucet as a little manual bilge pump. In describing the use of this you had to imagine either your custom electrical bilge scavenging system failing, or your chance discovery of any appreciable water, whatsoever (like me), being present in the hull! That said, It would be very informative to know, at the helm, whether that was occurring.
Of course the internal waterline would then vary somewhat, depending on what tack you were on - but somewhere in the center, it would set off the alarm (whether your pump was working or not!).
One waterline could be related to the other.
http://www.homehardware.ca/en/rec/index ... R-I3611224