water tank

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mollymawk's picture
Joined: 11/10/20
Posts: 1
water tank

Hey guys,
when filling the water tanks, when I use the full capacity,  I have a curvature/bulp. The venting is not working properly, and it is difficult to get there. does anyone have tips ideas to fix that problem?

pkeyser's picture
Joined: 5/18/13
Posts: 522

It's normal for the water tanks to show deformation when full. They have relatively thin walls and hold a lot of weight @8+ pounds per gallon. Your vent is probably working because if it  wasn't, it would take a long time to fill a tank and lots of water spray would be blowing out of the deck filler. The water pump would also not be very effective, as it would be creating a vacuum in the tank.
Try disconnecting a vent hose and blowing through it to verify it's not plugged up.

Paul & Wendy Keyser
"First Light"
Newburyport MA/Rye NH
2005 C36 MKII #2257
Wing, M35B

KevinLenard's picture
Joined: 1/28/15
Posts: 194

When we got our boat I noticed a leak from the main tank that turned out to be a fracture at the outgoing spigot.  I then found another leak around the access hole.  Fixed both with a hot melt glue gun and heavy duty glue sticks.  Permanently closed the access hole.  I eventually re-routed the vent hose, shortening it so that it had no dips in it that dropped below the top of the tanks and caused air blockages.  I now just top up the tanks until water comes out the vent hose.  Works great, no leaks.

Kevin Lenard
'91 C-36 Mk. "1.5" Tall Rig, Fin Keel, Hull #1120, Universal M-35 original (not "A" or "B")
CBYC, Scarborough, Lake Ontario, Canada

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