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Catalina 25 Specific Forum

1980 #2975 Cat25 Main Boom Vang?

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Ray4445
Deckhand

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USA
16 Posts

Initially Posted - 07/12/2018 : 15:57:27

Do I have a boom vang or does the Main Sail sheet act as one? I have the Traveller with "Y" backstay arrangement. Thanks

REF

dmpilc
Master Marine Consultant

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USA
4593 Posts

Response Posted - 07/12/2018 : 17:17:42

The traveler with the Y backstay arrangement has nothing to do with a boom vang. The Y just means you have a split backstay. It should also have a line that can adjust the backstay tension. The boom vang is a block and tackle setup between the base of the mast and a point about 3 ft down the length of the boom. If you have the vang hardware, there should be a metal loop called a bail under the boom set at an angle toward the base of the mast. There might also be a bail at the base of the mast. The block and tackle would be connected at each point. The block with the cleat and line tail could be at the boom or at the base of the mast, user choice. I usually prefer having the end of the vang line at the boom, over the companionway.

DavidP
1975 C-22 SK #5459 "Shadowfax" Fleet 52
PO of 1984 C-25 SK/TR #4142 "Recess"
Percy Priest Yacht Club, Hamilton Creek Marina, Nashville, TN

Ray4445
Deckhand

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USA
16 Posts

Response Posted - 07/12/2018 : 21:17:06

Actually boat number 2075 NOT 2975. I have the main sheet which has two pulleys, one on each end and the line goes through the pulleys about 3 times and then up to the boom. I was told I needed a boom vang but do not see anywhere on the Mast and Boom where one would attach. Thanks again for any help. FYI- My first boat other than a canoe.

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Ray4445
Deckhand

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USA
16 Posts

Response Posted - 07/12/2018 : 21:22:16

Thank You David P. I will look closer at the mast/boom now. It seems to me my Main Sheet arrangement which has only one line coming out of the pully(s)would also hold the boom down and does it?

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Steve Milby
Past Commodore

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USA
5895 Posts

Response Posted - 07/12/2018 : 21:32:31

The mainsheet holds the boom down when sailing to windward, but when sailing downwind, and the boom is swung far outboard, the mainsheet hangs limply, and a gust can lift the boom. That reduces the effective sail area, spills wind, and the flailing boom can become a problem. A vang holds the boom down whether sailing to windward or otherwise.

Steve Milby J/24 "Captiva Wind"
previously C&C 35, Cal 25, C25 TR/FK, C22
Past Commodore

Ray4445
Deckhand

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USA
16 Posts

Response Posted - 07/12/2018 : 21:39:48

Thank You Steve, I now understand! David P has told me where to look for the vang and if I don't have it I can get it from Catalina Direct but they offer like 3 different types so I believe I need to get the hardware attached that will work for me.

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keats
Navigator

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USA
215 Posts

Response Posted - 07/13/2018 : 05:25:13

Tim Keating
1985 C-25 TR/FK #4940
Midsummer
Lake Don Pedro, CA

Ray4445
Deckhand

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USA
16 Posts

Response Posted - 07/13/2018 : 10:27:04

Keats, Thank You, this is very helpful, appreciated

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Ray4445
Deckhand

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USA
16 Posts

Response Posted - 07/13/2018 : 10:28:38

Keats, Thank You, this is very helpful, appreciated

REF

Ray4445
Deckhand

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USA
16 Posts

Response Posted - 07/13/2018 : 10:36:22

Howard, Thank you for response, I live in Sequim, WA are you by any chance in Seattle area or on the Peninsula?

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keats
Navigator

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USA
215 Posts

Response Posted - 07/13/2018 : 10:41:06

quote:
Originally posted by Ray4445

Keats, Thank You, this is very helpful, appreciated

Ray, you can find this info and more at the Manuals & Brochures link at the left of this forum.

Tim Keating
1985 C-25 TR/FK #4940
Midsummer
Lake Don Pedro, CA

islander
Master Marine Consultant

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USA
4018 Posts

Response Posted - 07/13/2018 : 10:44:29

I'd like to add that when the Vang is mounted it will form an equilateral triangle between the Vang, boom and mast.

Scott-"IMPULSE"87'C25/SR/WK/Din.#5688
Sailing out of Glen Cove,L.I Sound

bigelowp
Master Marine Consultant

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USA
1773 Posts

Response Posted - 07/13/2018 : 10:56:28

have #2092 and for the first season I had her I did not have a vang. That was the first improvement I made and it is invaluable, in my opinion, so to both enjoy sailing and reduce worry of the boom knocking someone's head. They are relatively inexpensive and as the diagram shows, easy to install.

Peter Bigelow
C-25 TR/FK #2092 Limerick
Rowayton, Ct
Port Captain: Rowayton/Norwalk/Darien CT

hewebb
Admiral

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USA
761 Posts

Response Posted - 07/14/2018 : 04:08:26

quote:
Originally posted by Ray4445

Howard, Thank you for response, I live in Sequim, WA are you by any chance in Seattle area or on the Peninsula?

No, I live in North Texas Dallas Fort Worth Area

1988 WK/SR w/inboard diesel Joe Pool Lake
Hobie 18 Lake Worth

Life is not a dress rehearsal. You will not get another chance.

Voyager
Master Marine Consultant

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USA
5352 Posts

Response Posted - 07/14/2018 : 08:51:50

I�d suggest if you install a vang take a look at your other tackle nearby like the jiffy reefing setup, the cunningham downhaul, the main halyard all concentrated near the base of the mast and boom to avoid interference. Further, it�s helpful to run your lines back onto the cabin top near the cockpit so you don�t have to walk up to the mast to make adjustments. CD sells deck organizers for that too.

Bruce Ross
Passage ~ SR-FK ~ C25 #5032

Port Captain � Milford, CT

Edited by - Voyager on 07/14/2018 08:56:49

Ray4445
Deckhand

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USA
16 Posts

Response Posted - 07/14/2018 : 12:42:48

Scott, Peter, Bruse and Howard Thank you. I now have it "under control"

Turns out I do have a boom vang but on my 1980 25 it's one line and goes from bottom of boom then runs through single pulley and back to port side cleats at forward cockpit that have the downhaul, boom vang and ? sheet labeled. On the mast setup there is even an extra halyard from top of mast to a mast cleat and have no idea what that is about.

REF

bigelowp
Master Marine Consultant

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USA
1773 Posts

Response Posted - 07/14/2018 : 16:33:22

Ray:

Good to know! I would still look into a double pulley vang as it will have greater adjustability and in different conditions will provide more flexibility.

Peter Bigelow
C-25 TR/FK #2092 Limerick
Rowayton, Ct
Port Captain: Rowayton/Norwalk/Darien CT

Ray4445
Deckhand

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USA
16 Posts

Response Posted - 07/14/2018 : 20:29:13

Peter, Appreciate suggestion, may do so when I haul out at end of season after using, if I use the boom vang.

So - Once the vang is set you may want to adjust it? typically how often would that be done? I was thinking once it's set it will hold the boom down and you are through with it. I'm just a pleasure day sailor and if I suspect anything but easy to moderate conditions I won't be leaving the slip (I think).

I have the strangest Catalina 25 docked a few slips from me that looks like a battle tank on top. The boat is carrying a 2016 Registration sticker and have never seen the Owner. The cabin section has round port holes with a ring of heavy bolts and even the cabin entry door is a solid piece with a very large porthole similar to the side ones. Any idea what model this might be? I will try to post pictures on the site for you and others to see.

REF

keats
Navigator

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USA
215 Posts

Response Posted - 07/14/2018 : 22:24:09

Ray,

Allow me to attemt to give you Boom Vang 101 and others can provide you more advanced instruction.

The boom vang js intended to keep the end of the boom from rising and disturbing the shape of the mainsail.

When you are sailing close hauled (into the wind as much as possible) with the boom close to the centerline of the boat, the end of the boom is held down by the mainsheet and the boom vang should be left loose. It serves no purpose on this point of sail.

As the mainsheet is let out and the boom swings out from the boat, as in a broad reach with the wind coming from the side, the mainsheet does not exert as much downward force on the end of the boom and the boom vang should be tightened to force the boom down.

Any boom position in between close hauled and a broad reach would require a proportional amount of tension on the vang. Also, sailing with the wind from behind (on a run) requires maximum tension on the vang.

Like anything else with sailing, you should try to learn the fundamentals and then go out and try them out. That's what I've been doing. You'll find you can sail faster and with more control when you learn to use the boom vang, which is a very important piece of rigging on a boat like your C25, with the mainsheet attached to the stern.

In my case, I found leaving the vang loose on a reach would allow the boom to bounce up and down and I could see the effect that had on the mainsail and on my forward progress.

If you would prefer to focus on more elemental sailing skills right now you can just set moderate tension on the vang and leave it be.

Tim Keating
1985 C-25 TR/FK #4940
Midsummer
Lake Don Pedro, CA

bigelowp
Master Marine Consultant

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USA
1773 Posts

Response Posted - 07/15/2018 : 05:56:48

Ray:

That other boat might be a Catalina Capri 25. If you look in the photo gallery and/or the Capri forum you can see if it is, or is not that model.

Peter Bigelow
C-25 TR/FK #2092 Limerick
Rowayton, Ct
Port Captain: Rowayton/Norwalk/Darien CT

Sailynn
Navigator

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USA
178 Posts

Response Posted - 07/19/2018 : 12:31:05

If you have roller furling the extra halyard is called a lazy halyard from the days before the roller furling installed. Or it may be a halyard for a spinnaker but that would require the halyard to be on a swivel block at the top of the mast and additional deck hardware. Some people keep the extra halyard for a (oversized headsail with no spinnaker pole) often called a Gennaker.

Lynn Buchanan
1988 C25 SR/WK #5777
Sailynn
Nevada City, CA

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