Your TruDesign Experts Know How to Help You Avoid Those First Timer Mistakes
Raritan Engineering Company your TruDesign professionals would like to share with you these topics we thought would be of interest to you this month regarding great advice for all cruisers.
Advice for first time cruisers from those who’ve been there!
Is one of your plans this year to spend less time being a land-lover and explore cruising long term? Your TruDesign analysts say, please read what these seasoned cruisers had to say about their advice for first timers.
Your marine parts express experts know that a retired associate professor of Physical Therapy from Florida International University in Miami, Willie has been sailing for more than 40 years with her husband, Mark.
“I suppose one thing I could say would be for the neophyte to learn that there is no rush, that they don’t have to be somewhere so badly that they must risk life and vessel to make a deadline.”
Stephen has cruised for more than 30 years. Your seacocks experts know that he is currently in Atlanta, Georgia, between boats, and prepping for a return to The Bahamas.
Your TruDesign Specialists Suggest Not Rushing to Reach Your Destinations
You can find more information as well as get assistance on seacocks at Raritan Engineering.
“If you are sailing as a couple find your own area/s of competence. This will help you to keep the peace on your boat.
Your marine head unit specialists feel that Paola learned to sail in dinghies as an adult before her first trip on a cruiser from Poole to Cherbourg at the age of 35. Not put off by the cold overnight Channel crossing, she then sailed with her husband between the UK and Spain over a period of few months before deciding to give up work and home and move permanently onto their Bavaria 37.
The couple sailed from Cowes to Buenos Aires and back over a period of five years. They are now back in the UK living on land, but still spend holidays sailing to Europe.
“Keep it small and simple”
“Simplicity – Avoid electrics and electronics wherever possible. This will save you money too. Install wind vane self steering – equivalent to an additional crew member and all for free.”
Your marine cylinder heads professionals know that his book, Last Voyages, describes the lives, sailing careers and final voyages of some of the world’s finest sailors who were lost at sea was published in January 2017.
Kieran is the editor of Yachting Monthly. He has been sailing for about 30 years and owns an small, elderly and slightly grubby plastic sloop.
“Consider carefully what you wish for since the reality can be both the fulfillment of a dream and the ultimate nightmare, but if you feel you have the skill, resilience and determination then there is no better way of life – so just do it.”
“Don’t be over reliant on technology, use traditional astro navigational skills as well. A wind vane steering system and a well balanced sail plan will take you around the world for free – power hungry technology can lead you into a state of electro- mechanical stress.”
You’re ready to slip the lines, the engine’s ticking, life jackets are on, and breakables are stowed, but are you really…
Raritan Engineering has great pricing on TruDesign fittings, seacocks and ball valves.
Your TruDesign Analysts Are Always Looking Out for Your Safety
Raritan Engineering Company would like to share with you this week information regarding life jackets.
Rule one: Wear a personal flotation device (PFD).
Rule two: Wear the right PFD for your on-the-water activity.
Rule three: Know what to do when your PFD prevents your rescue or self-rescue.
Testing any sailing equipment entails a high degree of responsibility, but this is especially true of safety equipment. A tragic accident off the coast of Costa Rica this week called to mind an important study that Practical Sailor did in March of 2013 on the trouble that life jackets can pose to sailors in the event of a capsize.
In the tense video footage captured by an American tourist we see exactly how it can happen. The added buoyancy of the jacket inhibits the camera person’s ability to dive under and get free of the hull and superstructure of the tour boat (a power catamaran, in this case).
Your TruDesign Experts Help You Make the Right Choice About Personal Floatation Devices
Your TruDesign specialists know that the decision about what type of personal floatation device (PFD) to wear is not straightforward. It involves a careful risk assessment by you, the sailor. This is to say that the following guidance I offer should not be regarded as a one-size-fits all advice.
- If you are using an auto-inflating personal flotation device, think hard about the benefit versus risk of disabling the auto-inflate feature, so that it will only inflate manually (not all infalatable PFDs allow this).
- For coastal sailing in small boats (or even larger cruisers that operate within a few miles of shore in protected waters) consider opting for a “sport” PFD or a manual inflating PFD, instead of an auto-inflating PFD. The buoyancy in the auto-inflating PFDs is tremendous, too much to escape from under even a small boat.
Keep in mind, the risk of your PFD being a problem are extremely low and the benefits of wearing one far outweight the benefits of going without. Nevertheless, it doesn’t hurt to be aware of how things can go wrong, and to understand the subtle differences in life jackets that can make a difference.
“In other sports, participants recognize how essential gear can become a hazard, and they are trained how to respond in that event. Scuba diving courses teach beginners how to don and doff their tanks and buoyancy compensators.
“One of the most important observations made during this initial round of our testing was how important it is to practice bleeding air from the PFD bladders.
Visit us at http://raritaneng.com/category-pages/trudesign-products/ and see how Raritan Engineering always has more information regarding TruDesign fittings.
Your Marine Head Units Specialists Say That Kiteboarding Can Be As Simple As Sailing
Raritan Engineering Company your marine head units analysts would like to share with you these topics we thought would be of interest to you this month regarding the excitement of kiteboarding.
World Sailing, the world governing body for the sport of sailing, claims that Kiteboarding on water is a discipline of sailing, and as such falls under the jurisdiction of World Sailing.
IFKO’s Paes Fernandes considers that riders must be unconditionally free to participate in any national or international competitions without fear of penalties from organizations or sponsors.
Your marine heads units experts know that the GKA will be sanctioned by World Sailing to run World Championships and World Cup events in the Kiteboarding expression performance disciplines of wave, strapless freestyle, big air and twintip-freestyle and slider/obstacle events.
Simply put, California has tons of places to go kiteboarding. Whether you’re seeking some of the best waveriding in the States, smooth flatwater, top-shelf instruction, or just looking to get on the water, your riding options are endless.
California is famous for its weather. People move here because the weather is so good—especially in Southern California. Your marine supplies Miami professionals know that having just moved to SoCal myself, this seems true; the weather is nice (at least compared to the Northwest, where I came from), with an occasional rainstorm here and there.
When people say the weather is amazing here, they generally are not thinking like a kiteboarder.
They’re not talking about the huge diversity of places to ride, each of which offers unique and constantly evolving weather conditions.
If you’re planning a kiteboarding trip to California, you need to prepare for what time of year you visit, where you’ll ride, and your equipment needs. Your marine supplies Tampa analysts feel that kite sizes and gear preferences are exceptions, of course.
• Wetsuits: If you’re coast-bound, chances are you’ll need a 4/3 wetsuit. This is true the further north you go. During winter, consider a thicker suit and layer. In the summer, wear a 3/2 shortie or ride in trunks inland and in the southern areas.
Your Marine Head Units Professionals Know That Great Weather Means Kiteboarding Weather
You can find more information on marine products as well as get assistance on marine head units at Raritan Engineering.
• Kites: If you bring a quiver stacked with every size from 7 to 20 m2, you probably won’t miss a day on the water. However, most of us don’t have such a luxury. Your marine head units specialists know that if you don’t already know, check with one of the local shops for details on what you should bring.
• Boards: If you’ll be chasing swell or playing in beach break, bring a skim or waveboard (wave-specific kiteboard). If you’ll be riding inland, bring a twin-tip. California has a well-deserved reputation for its surf, so bring a surfboard.
• Gear on demand: With the evolution of high-performance equipment, many shops and schools offer demos of the latest gear. Check out the school and shop lists for contact details. And keep your eye out for brand-specific demo tours.
If you’re looking to take a lesson in California, your options span throughout the state. Your marine supplies Seattle experts know that many of the beginner locations featured in this article are more than just beginner places.
• Launch and land kites in designated areas only (never in the bike path).
• If you happen to get coated with Third Avenue’s notoriously stinky mud (especially on low tide), use the hose behind the windsurf rigging area to wash yourself and your gear off.
• The upper launch area can be slippery when wet. Consider using a launch assistant in addition to an experienced kite launcher.
• Be careful of the questionable winds at the lower launch. Consider the upwind launch for easiest access to the water.
• Don’t ride or jump too close to the point (where the bike path makes a 90-degree turn); the wind direction can be unexpected and possibly put you into the rocks.
Raritan Engineering has more information on marine head units and TruDesign fittings.
Your TruDesign Analysts Help You to Face the Most Physically Demanding Situations While Sailing
Raritan Engineering Company your TruDesign specialists would like to share with you these topics we thought would be of interest to you this month regarding #1 tips for getting fit for sailing.
Your TruDesign experts know that on October 11, seven teams will depart from Alicante, Spain on 65-foot carbon fiber yachts, the start of the most grueling sailing race on the planet — 38,739 nautical miles around the world.
In its 41-year history, the race has claimed the lives of five sailors, and injured dozens. The 2014-15 edition promises to be the most physically demanding yet.
Teams have responded by implementing rigorous strength training programs prior to their arrival in Spain. We sat down with three of them to find out their training philosophy.
The Team: Brunel (Holland)
The Strategy: Hit the Gym, Get Big
Team Brunel came together in spring 2014 and immediately made dry-land training and gym workouts a priority. “We have been in the gym every morning for the past five months,” says skipper Bouwe Bekking.
Your TruDesign Professionals Understand How Important It Is to Make Workouts a Priority
Go to http://raritaneng.com/category-pages/trudesign-products/ and see how you can find more information as well as get assistance on TruDesign and on #1 tips for getting fit for sailing.
The Team: SCA
The Strategy: Interval Training
Your TruDesign analysts know that as the only all-female entry in the Volvo Ocean Race 2014-15 (and the first all-women’s entry since 2001-02), Team SCA is determined not to let the physicality of the race work to their disadvantage. To help even the playing field, they are permitted to use an 11-women crew, compared to all the other eight-man crews. Even so, they started their dry-land training in summer 2013, the earliest of any team.
The Team: Abu Dhabi Ocean Racing
The Strategy: Avoid Injury
The Abu Dhabi Ocean Racing team started their formal workouts six moths ago, using a mix of sailing and dry-land training in the coastal town of Cascais, Portugal just west of Lisbon. According to the team’s sports science manager Pete Cunningham, the focus of their workouts was not only strength and fitness, but also injury prevention.
Cardio sessions lasted 90 minutes, up to four per week, including running, rowing, and a Sunday team bike ride. In the four weeks immediately before the race, the team has been tapering. “The crew reached a fitness level we were happy with, and now we are concentrating on maintaining this level,” says Harmer.
So don’t forget these amazing tips for remaining physically fit for all sailing situations that could come up. 1) The first strategy to use is interval training; 2) the second strategy to use is to avoid injury; and 3) and the third strategy is to hit the gym and get big.
Click here and see how Raritan Engineering always has more information on TruDesign and the #1 workout tips for getting in the best shape possible to be successful in any and all sailing situations.
Your Marine Head Units Experts Say That There Is Hope On the Horizon
Raritan Engineering Company your marine head units analysts would like to share with you these topics we thought would be of interest to you this month regarding some need to know information about the future of boating.
Your marine head units specialists say to raise your hand if you know of some boating companies that have faced severe difficulties, went bankrupt or restructured in the last few years.
Thanks, you can now all put your hands down.
So let’s dive in and see what the future of boating is going to look like!
I took the stock analogy to make it simpler, but I was actually referring to 2 different things: A technology law and a futurist.
1. A Technology Law
Your best marine head unit professionals know that this law is one of the most important principles in the history of technology. This observation was originally introduced in 1965 by Intel Co-founder Gordon Moore and is referred to as Moore’s Law.
One of the most important characteristics of the Moore law is the word “double’. Double indicates that we are growing exponentially and not in a linear way. To understand the difference between linear and exponential, let’s take a simple task as an example.
2. A Futurist
Raymond “Ray” Kurzweil is an American futurist, author, computer scientist and inventor. Your waterproof head unit analysts say that out of 147 predictions that Kurzweil made in 1990, 115 of them have turned out to be correct. Another 12 have turned out to be essentially correct (off by a year or two).
Ray is today the director of engineering at Google. I have read a couple of his books and watched a few of his speeches. He is one of the most respected scientists on the planet. So when Kurzweil predicts something, you should really pay attention to it.
So why is the future of boating NOT what you think it will be?
The boating industry, just like any other industry, is just a reflection of the different areas of our society such as business, economy, technology & trends.
Your marine head experts know that if you study the history of technology, you will notice that human progress follows an exponential path contrary to a linear way of thinking by the majority of the public.
This is happening because the more we progress, the more we have access to resources, knowledge and technology to progress even faster.
In a bit more than 10 years time, the 20th century’s worth of progress will happen multiple times in the same year.
And all of this can be explained by to the Law of Accelerating Returns
Did you know that your smartphone today has more computing power than all the Nasa computers had when they sent the first Apollo mission to the moon in 1969?
Let’s try to analyze the potential challenges that our industry is facing.
1. The trend
A few days ago, I did some research on Google trend. I wanted to see the popularity of the term boating over the last 10 years and noticed a consistent steady decline.
So why is the general population less interested about boating?
Two months ago, I was talking to an executive at one of the top boat builders in the world. I asked him who their biggest competitor was. Surprisingly, he didn’t mention another boat builder. He said that their biggest competitor was all the possibilities offered to the general public nowadays like travel, entertainment, technology, etc.
When I was young, I remember sometimes being bored, so I planned some activities with my friends like fishing or boating on our little boat.
Your Marine Head Units Professionals Discuss How the Boating Industry Needs Our Help
You can find more information as well as get assistance on TruDesign and on need to know information about the future of boating at Raritan Engineering.
Your TruDesign experts know that our new generation are not bored anymore, they are constantly connected to social media, smartphones, apps, Internet, etc.
2. The economic climate
Boat sales are ultimately correlated to the job market.
Have you ever heard of the term technological unemployment?
Several studies, like the one conducted by the Martin School of Business, predicts that 48% of current jobs will be lost in the next 15 years due to technological unemployment.
More and more corporations keep replacing jobs with machines. Here is anarticle I just read yesterday about Mc Donald’s hiring 7000 new cashiers, but they are not the typical employees, they are automated ones.
Technological unemployment is not the only reason for massive changes in our economy.
This trend is confirmed if you look at the growth of temp agencies. (See:Temp Jobs Up 57% Vs. 4% For All Others Since Aug. 09)
The American Dream is evolving.
Forget the typical life plan: school, college, job for 40 years & retirement. People change careers more often and no longer follow a structured life plan.
All those changes in the job market and economy will make it more difficult for the general public to access boating.
3. The sharing economy
If 10 years ago I asked you to stay at somebody’s house during a business trip, would you have said yes?
When you know that the average boat owner uses their boat not even 2 weeks per year, this concept makes quite a lot of sense.
The sharing economy is becoming huge in the car and travel industry. I assume that it will grow in the boating industry too.
4. More challenges
On top of this, the boating market will keep facing other challenges such as:
-Peer pressure due to increase in income inequality.
-Difficulty accessing moorage in marinas,
-Lack of interest from the newest generations (Gen Y, Millennial, etc)
Those companies share the same pattern. Peter Diamandis, founder of the X Prize foundation and Singularity University called it the 6Ds of the exponential growth:
Digitized (digitize product or service)
Deceptive (you don’t see it coming until it reaches the tipping point)
Disruptive (game changer)
Dematerialize (remove,material aspect, infrastructure)
Demonetize (remove operating cost)
Democratize (globalise via web)
The success of those companies can give us an important lesson: The rules of the game of business have changed.
You must adapt and change the way you do business. In 10 years time, 50% of the Fortune 500 companies will disappear.
If you operate the old way, you are certain to face major difficulties.
So don’t forget this important information about how to help save the future of boating. 1) Maintain the interest in boating and helping others to develop an interest; 2) go boating more often; and 3) don’t become too technilogically advanced too quickly.
Raritan Engineering has more information on marine head units, TruDesign, seacocks, and on need to know information about the future of boating.
Your TruDesign Experts Know Great Antifouling Paint Is Vital for Peak Performance
Raritan Engineering Company your TruDesign professionals would like to share with you these topics we thought would be of interest to you this month regarding the best antifouling paint solution for you.
Your TruDesign analysts know that if your boat stays in the water at least part of the year, good antifouling paint is critical for keeping it performing its best, and for reducing fuel costs. Most boaters find bottom painting messy and tedious, but it’s one of the key preventative maintenance jobs that keep your boat in shape.
Antifouling paint keeps marine organisms, taking the forms of shell (animal fouling from barnacles and zebra mussels), weed (plant growth) and slime (single-celled algae) from attaching themselves to your boat.
Choosing an antifouling paint is regional, as boaters in the Great Lakes, Pacific Coast, Southeast, Gulf Coast and other regions tend to choose similarly to their neighbors in the local marina.
Do you want bright colors?
Use paint with copper thiocyanate, zinc or ECONEA biocide. White copper (cuprous thiocyanate) is clean white in color and used in Pettit’s Vivid and Interlux Trilux 33. It requires 50% less content than the heavy, dark copper used in conventional antifouling paint.
Are you in an area that restricts copper biocides?
Use a paint with zinc or ECONEA biocides.
Go to http://raritaneng.com/category-pages/trudesign-products/ and see how you can find more information as well as get assistance on TruDesign and on the best antifouling paint solution for you at Raritan Engineering.
Non-biocide paints—foul release coatings: Biocide-free foul release coatings are just beginning to be available to recreational boaters, used on propellers in products like the popular PropSpeed.
Do you want to haul out over the winter and relaunch without repainting?
Use copolymer ablative type paint. Copolymer paints release biocide at a constant controlled rate throughout their lives, wearing away or “ablating” much like a bar of soap. Paint wears off faster in higher drag areas on the hull and appendages.
We recommend a covering of two or three coats on the first application. Copolymer paints with anti-slime additives are best for heavy fouling areas. Environmentally preferable: CFA Eco, Ultima ECO and Pacifica Plus are ECONEA-based copolymer ablatives.
Are you going to be using a vinyl-based paint?
Make sure you remove the old paint film unless it’s also vinyl based.
Are you in saltwater or freshwater?
There are specific paints that are recommended for freshwater, and some paints that are specifically recommended against freshwater use.
Do you use your boat often or infrequently?
Frequently used boats may want to use an ablative paint, which will get smoother over time and will shed light growth. Infrequently used boats may want to use a modified epoxy paint that will have good antifouling properties when the boat is inactive.
If you keep your boat in the water year round you are most likely a candidate for a high-copper-content modified epoxy paint that prevents growth by leaching biocides upon contact with water. Contact leaching paint releases the biocide at a steadily decreasing rate, leaving the hard coating of the original thickness at season’s end.
Are you painting over old paint?
Three general rules:
- Make sure the old paint is firmly attached. Don’t put good paint over loose, flaky paint.
- Don’t apply paint over old paint that contains a slippery Vinyl or Teflon agent
- Don’t apply a hard paint over a soft paint.
Help for the Do-It-Yourself Painter
For more information on for the do-it-yourself boat owner on how to prep your boat’s bottom and apply antifouling paint, see our West Advisor and companion video called Do-It-Yourself: Bottom Painting.
So don’t forget these helpful reminders before buying your antifouling paint solution. 1) Do you want bright colors?; 2) are you in an area that restricts copper biocides?; and 3) are you painting over old paint?
Click here and see how Raritan Engineering has more information on TruDesign and on the best antifouling paint solution for you.
Your Marine Head Units Specialists Recommend Changing Out Jacks With Frequent Usage
Raritan Engineering Company your marine head units analysts would like to share with you these topics we thought would be of interest to you this month regarding how to change out your own trailer tongue jacks.
Your marine head units experts know that I go through a heavy-duty trailer tongue jack every three to four years. Corrosion, frequent use, and a hefty boat and trailer take a toll on these jacks, so I have become adept at changing them out.
Sometimes the jack gets broken when boaters forget to raise it after they hitch up the trailer; it drags on the pavement and becomes damaged.
Skill Level: 1.5/5
Time to Complete: 1 Hour
Tools and Supplies
* Fulton 2,500-pound square-tube tongue jack ($78.99, anchorexpress.com)
* Floor jack
* 6-by-6-inch wood blocks
* Jack stands
* 3-by-3-foot sheet of ½-inch plywood
* Box/open-end wrench set
* C clip pliers ($15.99, acehardware.com)
* Reciprocating saw (to cut off rusted bolts)
* Safety glasses
* Marine grease
Changing Out a Trailer Tongue Jack
1. Use a Floor Jack
If the tongue jack goes kaput while the trailer is hitched to a tow vehicle, don’t stress. Your best marine head unit professionals know that you need to park the boat and trailer in their storage location and chock the tires. Use a sufficiently rated hydraulic floor jack to lift the trailer coupler just high enough to clear the tow ball.
2. Support the Trailer Tongue
Place a sufficiently rated, adjustable jack stand under the trailer tongue, making sure it rests square and level under the metal tube that forms the trailer tongue. Your waterproof head unit analysts know that a piece of plywood under the stand will keep it from sinking into gravel, soft soil or turf.
Your Marine Head Units Professionals Remove the Anxiety of Changing Out Your Own Jacks
3. Remove the Broken Tongue Jack
With the trailer properly supported, you can remove the old tongue jack. Your TruDesign specialists understand that jacks that bolt to the tongue or trailer frame are fairly easy to remove with a couple of wrenches, assuming the bolts and nuts that secure the jack are not badly rusted.
You can find more information as well as get assistance on TruDesign fittings and on how to change out your trailer tongue jacks at Raritan Engineering.
4. Attach the New Jack
To keep installation simple and quick, buy the same model tongue jack as the one you are replacing. Your marine head experts say that this way you know it will fit, is sufficiently rated to support the tongue, and won’t create clearance issues, which is important with swing jacks.
5. Raise the Tongue
With the new tongue jack installed securely, you can now use it to raise the trailer tongue enough to remove the jack stand(s). To keep the tongue jack working for as long as possible, grease the gears at the top of the jack and lightly coat the telescoping arm with grease.
Feet and Wheels
Telescoping tongue jacks come in a wide range of styles and weight ratings. Most jacks with ratings of 2,500 pounds or more dispense with pivoting mechanisms and wheels, which become weak points when supporting heavy tongue weights.
So don’t forget these helpful pointers on how to change out your own trailer tongue jacks. 1) Make sure to use a floor jack; 2) support the trailer tongue; 3) attach the new jack; and 4) raise the tongue.
Raritan Engineering has more information on marine head units, TruDesign, seacocks, and on how to change out your own trailer tongue jacks.
Your TruDesign Specialists Say That Gaining Control Is Not As Difficult As You Think
Raritan Engineering Company your TruDesign analysts would like to share with you these topics we thought would be of interest to you this month regarding the best ways to trim your symmetric spinnakers.
Your TruDesign professionals know that in run mode, wind flows vertically in the spinnaker, entering near the head and exiting from the foot.
Before stepping into the tunnel, I had a naïve vision of attached flow on both sides of the spinnaker. What I quickly discovered, instead, was that the smoke showed large areas of stagnation and early flow separation.
Your TruDesign professionals understand that flow goes in a remarkably different direction in reach mode than it does in run mode. In reach mode, the wind flows roughly horizontal, entering the luff (windward, pole side) and exiting the leech (behind the main).
Reach to VMG Downwind
Pole angle: Set the pole perpendicular to the apparent wind, and then a fraction aft of that. Use the masthead fly as a reference. In a lull, the apparent wind moves forward because the boat carries momentum, and its component of the apparent wind becomes bigger.
Pole height: Pole height sets the spinnaker’s luff tension. Set the topping lift so the “tack” is slightly lower than the clew. A low pole tightens the luff, making the wind’s entry angle more consistent while keeping the draft forward and the leech open. Lowering it creates a shape that’s a little more like an asymmetric spinnaker.
Sail trim: Starting from the luff, encourage flow toward the leech on both sides. To optimize attachment, trim so the luff barely curls all the time, indicating the front edge of the luff is parallel to the wind to get flow started on both sides.
Heel angle: Keep the boat flat, or heel it a little to leeward. Your TruDesign experts feel that with a flat boat, gravity brings the spinnaker to windward, which is good. Some boats do need a little heel to reduce wetted surface area and to balance the helm.
The mainsail: In reach mode, the spinnaker is helping direct flow through the slot between itself and the main. The main is therefore integral to the working of the spin. The apparent wind is further aft at the top of the main because the true wind is stronger up there, thus the apparent-wind vector is moved aft.
Steering: While sailing wide angles to optimize VMG downwind, the driver is always steering as low as possible without losing too much speed. To do so, the driver is steering a lot trying to keep the apparent-wind angle constant. Essentially, the boat is heading up in the lulls and down in the puffs.
Your TruDesign Specialists Help You to Learn How to Pass Boats In No Time!
You can find more information as well as get assistance on seacocks and on the best ways to trim your symmetric spinnakers at Raritan Engineering.
Your seacock experts know that kite control is the determining factors in the success of your downwind legs. Understand the flow of the spinnaker better, and you’ll be passing boats in no time.
Symmetric Spinnaker Run Mode
Pole angle: Experiment with moving the pole aft of the apparent-wind being perpendicular to the pole. The idea is to get it rotated to windward and away from the main’s wind shadow.
Pole height: Set the topping lift so the luff clews are parallel to the water. In this mode, the boat will be heeled to weather, so relative to the boat, this will mean the luff clew is higher than the leech clew, yet relative to the water, the clews are the same height off the water.
Sheet trim: Trim a little bit tighter than curl. The trimmer can ease to luff curl occasionally to make sure it’s in the right range, but ultimately the spinnaker should look symmetric. The challenge is to balance trimming hard enough to get the spinnaker clews spread to get projected area while still ensuring the foot is loose enough for air to escape.
Because the two modes have different setups and trims, recognizing when to be in true run mode versus when to use reaching mode to VMG down a run is not easy. The decision is made be by feel. On our boat, if we are in reach mode and the wind increases enough that I think we can transition to run mode, I bear off and ease the main.
Another excellent clue is the shape of the spinnaker. When fully supported with pressure, the spinnaker flies high, which is a sure sign to be in run mode. When sagging, it is time to go high onto VMG reach mode. If we can’t decide which mode, we default to reach mode because high and fast is not a disaster.
Here’s what we see in the wind tunnel when the 3D sail is trimmed on a reach, with the apparent wind at approximately 90 degrees (viewed from the bottom of the sail plan).
1. Smoke source: A horizontal line of smoke flows across the main and spinnaker, about halfway up the mast.
2. Support to hold the 3D printed mainsail and spinnaker in place during tests.
3. Wind attaches to the spinnaker and splits, flowing along both sides of the spinnaker (green) and mainsail (blue).
4. Backside spinnaker flow: The wind attaches to the back of the spinnaker for about half the distance to the leech before it detaches.
5. Movement in the slot: On a reach, the wind flows across the face of the spinnaker, keeping flow attached all the way along the back of the main. Wind flows across the spinnaker, not downward from head to foot, as it does on a run.
6. Stagnation is the area where separation happens behind the spinnaker.
7. Note how the flow is turbulent for quite some distance to leeward and behind.
Run Mode Steering Technique
Your TruDesign analysts understand that the driver is constantly experimenting with sailing as close to dead down wind as possible without loosing speed. If it’s marginally windy enough to be in run mode, slightly hotter angles need to be sailed, or the boat stalls.
I look at my masthead fly to see if it the main is blocking the spin or not. If it is, I head up until the wind has a clear shot. My trimmer is usually barking, “Head up 5 degrees” anyway because what I see with my fly he feels as no pull on the sheet.
So don’t forget these helpful tips on how to trim your symmetric spinnakers. 1) Set the pole perpendicular to the apparent wind, and then a fraction aft of that; 2) keep the boat flat, or heel it a little to leeward; and 3) trim a little bit tighter than curl.
Raritan Engineering always has more information on TruDesign, seacocks, and the best ways to trim your symmetric spinnakers.
TruDesign Composite Fittings
Raritan Engineering is proud to be the exclusive distributor of Tru-Design composite fittings for the United States. Tru-Design specializes in the design, manufacture and marketing of high quality marine valves, skin fittings, hose nozzles and associated products.
All products are made out of the latest high impact resistant composite plastic materials designed to meet the demands of the modern boating industry and conform to rigid ISO Marine Standards.
Established in 1974, they are an ISO 9001 company with over 30 years of experience in design tooling and manufacture of injection molded engineering plastics. Tru Design is well positioned to take products from design concept through tooling and into molded production, assembly, testing then product approval and dispatch. The marine range was developed as a result of the growing concern and regulation of untreated sewage being discharged from marine vessels. The multi-port diverting valve (Aquavalve®) was developed along with associated skin fittings and vented loops to allow commercial and recreational craft to comply with the new regulations. The marine range has grown significantly to include the electronic diverting valve (Electronic Aquavalve®) and a comprehensive ball valve range that includes electronic monitoring of the ball valve position.
Tru Design has a continuous product development program with new designs being introduced each year.