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ContinuousWave: Whaler Performance
1989 18-Outrage with 150-HP Yamaha
|Author||Topic: 1989 18-Outrage with 150-HP Yamaha|
posted 07-10-2003 03:15 PM ET (US)
[I am] curious ...where this [1989 18-OUTRAGE] [should] sit in the water. The 150-HP Yamaha engine is [an 1989] as well. [The] two drain holes in the [stern splash well] sit just under the water line. No water in the stern [splash well], only in the [deeper portion] by the drain holes. [Does] this sound right or [is my boat] sitting low? Also, there are two batteries in the stern and an oil tank and about 3/4-ths of a tank of gas. [That would likely be about 50-60 gallons--jimh.]
Any help would be appreciated.
posted 07-10-2003 04:47 PM ET (US)
I have an  18 OUTRAGE with  Mercury 135-HP.
It sits roughly where yours does from what I can recall.
However, I've moved my batteries and oil tank under the console, my splash well is empty of everything except stuff I throw in during the day.
The little center drain well is about an inch from being full.
I don't put my plugs in any of the splash well drains so if I'm loaded down with people I get a little more back there but not enough to make difference.
posted 07-10-2003 05:32 PM ET (US)
With the plug in the middle drain, the waterline on the transom of my 1987 Outrage 18 with a 1987 Johnson 150 would sit just ever so slightly above the two side drains but I would get water lapping into the [deeper portion at the drains] if there were any waves. This is with one battery and the oil tank in the engine well area.
Yours sounds like it is sitting about right.
posted 07-10-2003 08:11 PM ET (US)
What center drain are you talking about? I do not think I have a center drain. I only have two on either side of my motor. Am I missing something? Also in the [stern] of the boat in the [cockpit deck] I have a plug in. Are there any other places I may be missing a plug? I also plan to move my two batteries and oil tank to the console.
tThanks for the help.
Also do you know of any one way plugs that can be used in the splashwell drain holes?
posted 07-10-2003 09:40 PM ET (US)
Having a Whaler sit in static trim with the transom splashwell drains just above or at the waterline is fairly normal. If the transom splash well drains are unplugged there will be a small amount of water in the splash well.
I have seen evidence of some boats, particularly with twin engines, where the transom splash well drains are submerged and admit quite a bit of water to the splash well in static trim.
On most larger hulls the splash well has two drains. I don't have precise data on how many drains each model of Boston Whaler has. It may depend on the style of the splash well. If the splash well is the smaller volume style that does not run the full width of the boat, there may be less drainage.
Usually boats 20-feet and shorter only have a single cockpit sump, generally on the starboard side just in front of the splash well dam, which collects water and permits it to be drained out the bottom of the boat when underway from the vacuum action of the water and the clam shell mounted on the drain exit on the hull bottom. If this drain is left unplugged at static trim it will admit water but not to a depth that exceeds the depth of the sump (in most cases).
Look at the photo of a 22-Outrage with static trim that submerges the spash well drains; you can see by the marine growth on the engine that the splash well drains were several inches below the water line.
posted 07-10-2003 10:08 PM ET (US)
Jim, the tranasom isn't supported in any way, theres no keel support, the bunks are in the wrong place & those engines sit with their brackets half submerged.
What a horrible setup.
posted 07-10-2003 10:51 PM ET (US)
Alan, that is about how my Outrage sits only I have a 9.9 kicker but no batteries. Joe
posted 07-10-2003 11:00 PM ET (US)
not sure if everyone understands me but the tops of my drain holes are right at the water line. just looked at another 18 outrage near mine with 150 yamaha and it was sittinng an inch or two higher them mine. not sure how much fuel they had on board. But from what I am hearing sounds like I am not sitting too low. Thanks for the help. does any one use one way plugs or is there a way to plug the drain holes but still allow water to drain out.
posted 07-14-2003 04:10 PM ET (US)
Went out this weekend and had a look at the water level while we were fishing. (Remember I was in salt water which is more buoyant.)
The two drains are actually out of the water and the center drain is under....
If I stand back there or sit on the motor the level raises up about an inch or so.
I weigh about 200# and I had around 250 - 300# of gas (30-40 gal) and a trolling motor (15#).
Hope it helps.
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