How many thru hull fittings is alot? for ballast

(curt489) · (curt489) **Join Date: Feb 2008** 02-11-2010, 1:20 PM

How many thru hull fittings is alot for ballast system. I am re plumbing my ballast system so that when emptying it goes over the side rather than back through the bottom of the boat. I have a reversible pump system.

Right now i have 3 vent holes for the bags,and 1 for the bilge pump all on one side of the boat. I plan on adding two more thru hull fittings on both sides so that when emptying the water out of the bags it shoots over both sides. This would be 5 on the strb side and 1 on the port side.

(jonblarc7) · (jonblarc7) **Join Date: Jul 2006** 02-11-2010, 1:31 PM

Just T into your vent lines and place check valves on the vent side and emptying side of the T.

If you don't want to put anymore holes in your boat.

(dirwoody) · (dirwoody) **Join Date: Apr 2003** 02-11-2010, 2:02 PM

A good friend of mine has 4 vent holes (middle, front, and 2 rear) and 4 drain holes

(nick_in_ssp) · (nick_in_ssp) **Join Date: Aug 2006** 02-11-2010, 5:02 PM

I have my vent and drain lines together without a check valve. Just make sure the drain lines goes straight out the boat and the vent is above the drain line.
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