Trim TABS and DEEP VEES - The Hull Truth

Smelly · 02-03-2006, 10:38 AM

HI Team!

If my hull has a deep vee of 22 degrees, isn't this angle good enough to cut through chop and not need trim tabs?
(As Trim Tabs help the boat plan quicker and hence cut through chop easier)

Or can Trim tabs help any boat significantly - no matter how deep the vee is?

Why is it worth me spending the extra $$?

Smelly

Smelly · 02-03-2006, 11:06 AM

DO they help in other ways?

mronzo · 02-03-2006, 11:07 AM

Get the trim tabs! This is not a spot to
go cheap on!

Smelly · 02-03-2006, 11:09 AM

Irrespective of deadrise angle?

I am pretty certain I want them - I read elsewhere that if you have a shard deadrise, the benefits may be as obvious..

Thoughts?

troll · 02-03-2006, 11:10 AM

IMHO trim tabs are essential on any ocean going boat. Be sure to learn when and how to use them.

Glenn · 02-03-2006, 11:12 AM

Get them...do not think twice... My boat has a 24 degree hull and by using the tabs I can adjust the ride for whatever seas I encounter...I would not own another boat without trim tabs, period.

Glenn

dwg2116 · 02-03-2006, 11:30 AM

Quote:

Smelly - 2/3/2006 10:38 AM HI Team! If my hull has a deep vee of 22 degrees, isn't this angle good enough to cut through chop and not need trim tabs? (As Trim Tabs help the boat plan quicker and hence cut through chop easier) Or can Trim tabs help any boat significantly - no matter how deep the vee is? Why is it worth me spending the extra $$? Smelly

I have a Bertram 28, it is also a deep vee. Even though the B28 is a nice riding little boat, there is a huge improvement with tabs. In addition to being able to level the boat side to side, you can lower the bow so that you take the hit starting well forward on the hull, rather than one sudden slap amidships.

As far as improved time to plane, I do not see that at all, the boat comes up out of the water best and fastest with no tabs at all. The tabs cause drag, which actually makes it harder and slower to plane. The only time I add tabs is to adjust the boat once it is up and planing.

Bottom line is that the tabs are a tremendous improvement, even for a well designed boat,

Smelly · 02-03-2006, 11:30 AM

SOLD!

LOVE THE TUNA!

Smelly · 02-03-2006, 11:51 AM

My rig: 5.3 fglass.
Beam 2.21m
Deep vee 22 degrees

Should I go for 19" x 12" tabs or 12" x 12" tabs (Only Bennetts) - why?

Smelly

troll · 02-03-2006, 12:56 PM

I believe a person from Bennett Marine is on the board. Tabman perhaps? He can best answer the size question. Bennetts have a great reputation and are standard on boats by many builders including GW (my brand).

Drifter · 02-03-2006, 01:14 PM

Get the tabs.

captainjay · 02-03-2006, 01:21 PM

Two kinds of boats. Those with tabs and those that need them.

Tabman · 02-05-2006, 12:06 AM

Smelly,

I answered your post on my forum.

Trim Tabs will help almost any boat get on plane faster as long as they are properly sized so that the lift to drag ratio is effective. My Aquasport with M120 Sport Tabs gets up on plane much faster and with much less bow rise with the Tabs deflected a bit before takeoff.

Tom Mcgow
Bennett Marine