Wondering what difference between this 2 different cat designs

[riki]

Hi.
Can anybody tell the difference when sailing between the classic front shape in catamarans with the net compared to this kind of design (without net)?



Thanx

[Dulcesuenos]

Endeavour cats, Prouts and a few others don't have nets and I've never heard of one having an issue offshore stuffing a wave etc.

[riki]

Originally Posted by Dulcesuenos

Endeavour cats, Prouts and a few others don't have nets and I've never heard of one having an issue offshore stuffing a wave etc.

Exactly wat i was asking myself.....would this different design give more hull slapping issues? Also privilege that have very small net is renomated for great performance from this point of view....so looks like might just be a matter of design...

[cal40john]

Previous CF discussion

http://www.cruisersforum.com/forums/...eck-12408.html

[riki]

Originally Posted by cal40john

Previous CF discussion

http://www.cruisersforum.com/forums/...eck-12408.html

Very interesting, thank you very much.

[barnakiel]

Slapping is the result of how much clearance there is and what shape the (bridge-) underbody is.

Different makers tried with different bows and platforms at different times trying to please the buyers' crowd instincts.


Go for max clearance and curved angles below. Low and flat is BAD.


Cheers,
b.

[SV Bacchus]

Is rare that we've had waves pop through the net but it has happened. The bridge deck slams before those waves come through. I doubt the solid foredeck will contribute much to the bridge deck slam issue.

[riki]

After reading the thread kindly linked by cal40john i understood that by direct experience of users, looks more like a matter of style/design/trend than real difference in behaviour.
Very interesting.

[Cadence]

Get one with a net if you have a number of scantily clad young ladies to bask on it. Get a solid deck for practicality.

[riki]

Originally Posted by Cadence

Get one with a net if you have a number of scantily clad young ladies to bask on it. Get a solid deck for practicality.

If i had these ladies i'd rather take them down.

[jmschmidt]

Bridge deck clearance is probably a biggest contributor to slap or no slap.

[onavegador]

First I have to say that I like my Nauticat 10m but when sailing her on wind in a Force 6 Meltemi she slapped incredibly a lot of noise and the floor planks have throwed away by the waves slaming the catamaran from underneath. That I never hat with my previous Visiona 40 with netting betwen the hulls.
I understand it is easier to walk on a solid deck than on a not tight fitted netting. And fitting a net really tight is hard work and aks for many hours.
Fair winds
James

[riki]

Interesting onavegador, might be a clearance/design issue?

For who is interested i found this article that add somemore points of view: https://catamaranguru.com/brokerage/...ali-catamarans

Look like some newer designs are "going back" to the solid foredeck. Trends....

[Cadence]

Originally Posted by riki

If i had these ladies i'd rather take them down.

Wouldn't we all. We can dream. Seriously the netting may help with slapping but eliminates a workable fore deck. I prefer a hard surface. JMHO

[belizesailor]

Originally Posted by riki

Exactly wat i was asking myself.....would this different design give more hull slapping issues? Also privilege that have very small net is renomated for great performance from this point of view....so looks like might just be a matter of design...

The forward nacelle on a Privilege doesnt normally get any wave slap...could in really ugly seas, but not a practical issue. The slap/pounding typically encountered on cats is under the bridge deck. Privileges have good bridge deck clearance so typically not a problem either...though the bridgedeck, not the nacelle, is where it will slap in the right conditioms.

Privileges do NOT have a solid foredeck BTW...just smaller nets either side of the nacelle. They are down in a bit of a hole as a result which means the foredeck is uneven (ups and downs).

The forward nacelle has a v-hull like shape so cleaves any waves that should get that high. It also creates additional storage space...and another cabin on bigger Privileges...a big one on the 65.

Some Privileges Ive run tend to sail at anchor a little when the wind picks up. Not something a cat normally does. My hypothesis is the nacelle acts like the bow on a mono and causes this (its minor, but noticeable if you are on the foredeck).