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Zuma is a 12 ′ 9 ″ / 3.9 m monohull sailboat designed by Gary Grossman/Steve Nichols and built by AMF Corp. and Pearson Yachts starting in 1984.
Auxilary power, accomodations, calculations.
The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.
Classic hull speed formula:
Hull Speed = 1.34 x √LWL
Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL
A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.
SA/D = SA ÷ (D ÷ 64) 2/3
A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.
Ballast / Displacement * 100
A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )
This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.
CSV = Beam ÷ ³√(D / 64)
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New to this group and pretty new to sailing, and find myself in need of advice. I've got a little Zuma. My only prior experience was learning with a Sunfish. The Zuma has a gooseneck on the mast that pivots only up and down. It appears with this set-up the mast must pivot in its pocket in order for the boom to move in and out freely. The boat also has a Vang and a Cunningham. The Cunningham runs through a fairlead aft the base of the mast to a cleat on the deck. Part of the reason for the Cunningham is to keep the mast in the boat in the event of a capsize. The line from the Cunningham interferes with the Vang which I think will restrict the motion of the boom in one direction. I don't want to capsize right away because I can't let the sail out. Hopefully I can get a picture attached. What am I missing here?
I am guessing... but would like a bigger image where I can see the connections of the cunningham on the sail and the vang on the boom. .
I don't have a picture showing that, but the Cunningham is up through a grommet in the sail and back to the topside of the gooseneck so when the Cunningham is pulled down, it keeps the mast in the boat and the luft tight. The Vang attaches to the mast and boom with clevis's and threaded pins hooking into U shaped straps on the boom and mast.
run your cunningham line through the shackle that attaches the bottom of the boom vang to the mast. done. the cunningham would never be that far aft. easy pezzee
what do i win?
jon hansen said: easy pezzee Click to expand
no, run the line back to the eye on the center line again. after the shackle
I did try running the Cunningham through the lower Vang shackle. some better, but it still seems to me to restrict the mast motion if the Cunningham is pulled tight and anchored to the deck. Seems like the goose neck should have been the type that pivots horizontally as well as vertically.
grommet, shackle, eye, jam cleat. easy pezzee
it's crude, but it'll get you sailing google zuma photos. that's what most are doing
you want the perfect downhaul, or just take your honey sailing? life is full of choices
973 663 1242 ask for todd they will be open tomorrow in NJ
You must keep the Cunningham close to the mast until it gets below the vang's mast attachment. Why don't you try wrapping the Cunningham around the mast once before threading in the deck fairlead. Or... you can simply attach a small eye strap(i.e a second fairlead) near the goose neck to keep the line close to the mast on the way down to the deck fairlead.
Joe said: you can simply attach a small eye strap Click to expand
jssailem said: Not sure if you need to adjust the Cunningham. If not why run it to the cockpit? If you need adjustments then the eye strap will present friction into the line making adjustments improbable. Use the eye strap to hold a small turning block. Now less friction. Adjustments possible. If no adjustments needed then just tie the Cunningham off on the boat at the base of the mast. Click to expand
thanks for all the good advice. I'm not sure this was a big problem, but attached is my solution. (or solution in search of a problem) the first picture is the original goose neck. It pivots only up and down. The second is my McIvered version, created with eBay parts and a piece of 3/4" aluminum square stock. I didn't have to alter any part of the original boat's hardware I couldn't put back to the way it was originally either. I think this'll work better than the original design.
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View and Download Vanguard ZUMA rigging manual online. ZUMA boat pdf manual download.
In this video I show how to rig up a Zuma sailboat.
View and Download LaserPerformance Zuma rigging manual online. Zuma boat pdf manual download.
Place the mast butt against a solid object, lift the top end, and walk toward the butt, raising it hand over hand until the mast stands vertical. Rotate the mast until the gooseneck (the metal post about two feet above the butt) points toward the stern. Keep your hands a good distance apart while lifting the mast over the hole.
Hi! Does anyone know where we can get a rigging diagram for our 1987 Zuma 12' sailboat? Any help would be greatly appreciated....
Wrap the sail sleeve around the mast (with the free end of the halyard inside) above the gooseneck and engage about three inches of zipper to hold it in place. Pull on the halyard with your left hand while zipping the sleeve closed with your right, until the sail is all the way up. Cleat of the halyard securely.
How to rig up a Zuma sailboat BURNABY SAILING ASSOCIATION 7 subscribers Subscribed 18 2K views 1 year ago ...more
The 1988 Alcort Zuma Standard sailboat has a fiberglass hull and has an overall length of 12.92 feet. The width (or beam) of this craft is 51 inches. This boat is rigged as a Cat. The sail area for the sailboat is 65 square feet. The displacement for the boat is approximately 129 lbs.
The best replacement rigging solution available to freshen up your Zuma. Perfect for casual sailing, summer camps or learn to sail programs, this custom made kit includes color coded rope for the entire boat. Halyard, sheet and control lines chosen from premium ropes and cut to the perfect length for each use. What's Inside the Box:
This is a group for people interested in Zuma sailboats. All topics related to the Zuma sailboat, including sailing techniques, rigging, maintenance, restoration, buying and selling, parts availability and anything else related to Zuma are welcome.
Sound Boatworks is the #1 Source for all of your Sailing Needs. From Sailing Gear & Clothing to Hardware & Line, Custom Rigging and One-Design Parts, we have everything to fit your needs. Our goal is to offer every sailor the best product offering coupled with Tech Support & the very best Customer Service. Whatever your sailing needs are, GearUP today with Sound Boatworks!
The Zuma was designed to provide fun and performance in a safe and super stable package. Specifications: LOA: 12'9". Beam: 5'. Sail Area: 65 square feet. Hull Weight: 130 lbs. Features: Two water-tight ports with storage bags for valuables, clothes, towel, and munchies. Comfortable rolled seat tanks.
Member I owned a Zuma for several years. Great little boat, and I've often regretted selling it (but then again, I've regretted selling ALL my sailboats! ). At any rate, it is considerably dryer than a SF, is more comfortable to sail on, less quirky (no lateen rig, gooseneck adjustments, etc.), and can carry more people.
Not sure what sailboat parts your looking for? Here at West Coast Sailing we have parts locators and rigging guides for most sailboat brands.
I got a used Zuma (guessing it is from the 80s) and it's in pretty good shape, only issue is the cleat on the mast is broken (pics attached). I know NOTHING about sailing but I'm trying to learn. Wondering if anyone can point me in the right direction of tutorials to properly secure the sail to the boom, and ideas for securing the sail to ...
Rigging Guides. Not sure how to rig your boat or looking to brush up on a certain part of your rigging? Check out these Rigging Guides with photos and tips for rigging a variety of small sailboats. Available as PDF downloads for ease of use.
Sailboat Links Builders: AMF Corp. Pearson Yachts Associations: LaserPerformance Download Boat Record:
The sail type is quite a bit different - the Sailfish sail is a lateen rig, with two spars, and the lower spar normally has a gooseneck that connects to the mast. I'm honestly not sure if the Zuma mast would fit into that gooseneck. I'd probably look into selling the Sailfish rig and finding a used Zuma sail, or just buy the new one from Intensity. May 18, 2020 #5
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Zuma Sailboat Replacement Rigging Line Kit quantity. Add to cart
Zuma is a 12′ 9″ / 3.9 m monohull sailboat designed by Gary Grossman/Steve Nichols and built by AMF Corp. and Pearson Yachts starting in 1984.
I've got some health issues going on and being able to "bathtub sail" the Zuma (think how most adults sail in an Opti after dinner with a beer in one hand and limbs hanging out all 4 sides of the boat) hull is moderately possible for me while a Laser hull is just impossible. I see a fair amount...
The Zuma has a gooseneck on the mast that pivots only up and down. It appears with this set-up the mast must pivot in its pocket in order for the boom to move in and out freely. The boat also has a Vang and a Cunningham. The Cunningham runs through a fairlead aft the base of the mast to a cleat on the deck. Part of the reason for the Cunningham ...