Cost

I've noticed a spurt of budget-focused posts lately. Having been a victim of corporate consolidation few months ago I get it. While I could make a list of ways to spread money thin and a list of ways it disappears in big chunks, I find one thing helps more than all the others.

Know what you want to do. Going to the movies, shopping, or out to dinner is what happens when conversation slides to Jungle Book:

 "What do you want to do?"
"I dun know. What do you want to do?"
"'What do you want to do', 'I dun know, what do you want to do.' Well let's do something!"

When I actually know what I want to to do, costs go way down. I'm too busy doing it to notice the advertisements or all that is for sale in the world around me.

1. Write a book or an article.
2. Paddle wetlands or whitewater.
3. Climb ice or rock. Travel can make this expensive, but local is free.
4. Bicycle.
5. Read a good book. I love libraries.
6. Sail somewhere.
7. Fix something. Though the part may cost something, more often it is still cheaper than entertainment, and something is accomplished, which will allow for guilt-free reading of that good book a little later.
8. Research something. This probably circles back to one of the above. Very engrossing.
9. Learn a new skill.
10. Get a group together and do the thing that one of those people is interested... but not the movies.

But as a general rule, when I'm doing something or working on something, I'm not spending. When finished, I either kick back or get on with the next thing. But the moment you find yourself saying "I'm bored," you might as well pull out the checkbook, because the lazy answers come with a price tag.

Bowsprit

(Note: I will be revising this as I get dimensions and finalize the design)

rev. 10-12-2015

("have" indicates I somehow have on in the might-need pile. it is a substantial and rich pile, scavenged from far and wide. It really helps keep my boat keeping cost down. My sources, of course, are top secret.)

After a day at the boat show and talking with designers, I've become convinced the real reason for a bowsprit on a cruising cat is not speed, it is to prevent hourglass tangles during jibes, the result of the forestay and spinnaker tack being too close together. My Stiletto tangled, my Prindle never tangled, but the PDQ will do it every time if the lines aren't handled just so. I could lower the squeezer, jibe, and rehoist, but that just isn't cool. And thus, a bowsprit is in order.

I'm not interested in a screacher; I have a 150% genoa that provide nice balance and is all she really needs or want up wind. This is only for a chute. Thus, I do not have to design for the huge tension loads a stay-set sail requires.

I cannot use the pole-type that Sandy (PDQ 36 Page 83) used; there is a gull striker in the way. I wouldn't want it over the tramp anyway.

Water stays. I can't secure them to low mounted u-bolts in the conventional manner; the starboard side the crash tank comes up at least 18 inches. Mounted that high, the compression load on the front beam would double, and I don't want to add a compression strut to the bridge deck. I could rig them like the Gunboat G4 and most beach cats:

• Stays to the fore beam ends for lateral loads.
• Extend the gullstriker downwards (dolphin striker) ~ 18" and run a stay from the tip of the pole, under this striker, to an anchor on the bottom of the bridge deck. This will take the vertical loads. However, the compression load on the front beam is doubled.

 So long as I can take the water stays near the water line, I'm not too concerned about the aft load on the fore beam for a chute. Some simple capsize calculations suggest that the maximum tack load might be about 450 pounds, though the usual load is less than 250 pounds even at double digit speeds (I can hand-tension the 2:1 bridle with reasonable effort by snapping it up so long as the wind is aft of the beam). The lateral load, whether carried by water stays or beam stays, results in only about 120 pounds of compression on the sprit. The vertical load is the concern, resulting in about 320 pounds of compression. Though I do not have detailed information on the forebeam, 440 pounds doesn't strike me as a lot on that span, far less than hard jumping on the tramp, which won't be happening if you are driving that hard.

Another way to think of this is to convert the force to horsepower. twin 9.9s can generate about 400 pounds of line pull (tested). If the tack tension is at 450 pounds (parallel to our direction--no drive), the sheet tension is generally about 500 pounds and the forward component of the halyard tension will be about 400 pounds, for a total of about 900 pounds of drive from the chute alone. Assuming about 1/2 that from the main and we have 1350 pounds of drive, or 67 horsepower. 3.3 times usual and enough to be driving in the low-teens. That would require over 25 knots going deep or 20 knots closer to the beam and is off my speed polar (I wouldn't drive nearly that hard as a hull start getting light--I've done that).

I will make the up-haul tackle internal, fed to one of the jammers.

So how to secure them low? I plan to use the same method I used on my Stiletto. I will take a stainless strap, like a chain plate, and wrap it around the bow at he height of the boot top, hiding it under the tape. It will be secured by about 8-10 self tapping screws in solid FRG, well bedded with polyurethane (Locktite PL S40 from Home Depot is a steal). Since all of the stress is in shear, they are safe and well suited to this application. I would go a few inches higher to reduce drag, but I want to hide it and I need to stay in the solid glass. The water stays themselves will be 3/16" Amsteel (have).

The spar itself may be a Hobie cat mast section (have), though that is overkill and I may switch to something smaller, If I find it. Smaller would save a few pounds, perhaps, but the larger diameter and thichness will make mounting the jammers easier.

There will be 2 internal lines; 2:1 tackline and 2:1 uphaul to the top of the gull striker (this supports only the sprit, about 8 pounds). These will be secured to jammers (have) on the sprit (I have these). I will put loop handles on the ropes to make hauling easier.

The tackline will exit through a Stiletto reacher halyard bock (have). The uphaul through a smaller block.

The slider is visible on the beam

The lines will be 8mm nylon (have). I reason the uphaul needs some stretch, since the water stays will not and any boats twists a little, moving through the waves. I don't want to create excess stress on the gull striker or forebeam by virtue of an unyielding rig. The spinnaker tack line will be polyester; stretch is not a concern--spinnakers need some give in lumpy conditions--the length is very short and it is 2:1 purchase.

The butt of the pole will rest on a track on the fore beam, allowing it to be moved to the side using a pin slider (have). This is NOT for adjusting the sprit, but rather to allow folding. I will likely not fold the sprit for years at a time, but they are commonly designed this way to allow for attaching and detaching furling screachers. Since I have the parts, it makes for a convenient mounting.

Not folded this way, but that is the idea. I doubt I will fold it often, perhaps not every year. but worth providing the option, since it also allows height adjustability.

Angle. Level or canted upwards. Level minimized compression on the sprit. Canted upwards improves control of the tack and reduces sail bouncing in lumpy conditions. I suspect I will tip it up about 1-foot, but it will be adjustable.

What will I need to buy? Embarrassingly little, for a professionally built and equipped sprit nearly identical to that on the Antares 44. Perhaps a few few pad eyes and a few screws, though I may have them. I may have to buy the stainless straps. Kits are available for ~ $1200 + rigging, but I bet I can do this for less than $50, the track being the major expense, using my considerable "might need" pile. I'll keep track. I will get the sprit I want and a few custom features.Not much, lunch money should cover it. Neat.

Thoughts?

rev. 10-12-2015
After a day of measuring, looking at the speed polar, and considering the way I sail, I've decided the sprit is not nearly as versatile and efficient as the bridle:

• We use the chute with the wind on the quarter, going deep, more often than on the beam. The purpose of the chute is to provide speed when too deep for the genoa.
• The bridle presents more area to the wind, when shifted to windward, going deep. 
• The bridle provides better tack control (height and less bobbing in lumpy conditions).
• The bridle weighs less and creates no drag.

Jibing remains a problem, but how often do we jibe? Not most days, and then perhaps only once. The ability to go deeper gives better VMG and reduces the number of jibes

The current set-up looks like this:

Barber Pole?

Actually, what we are seeing is the more vulnerable blue strands (more sun absorbed?) failing under extream winch loads, while the core hangs tough. The core is Dyneem, still strong as heck even as the cover fades away. Only the cover between the clew and the winch--about 6 feet--is affected, since is the only portion that sees high loads, depending on how much the sail is reefed. This is not chafe, since this section cannot reach the winch or any chafe point.

Why is the load not simply carried by the core? I suspect that it is for the most part, but that the cover is creeping on the core just enough to have caused this odd failure pattern.

Fender Washers--Basically Useless?

In the process or researching an article on backing plates, it seemed worthwhile to actually test some washers. After all, it was the failure of fender washers that led to cracking of my deck and the need to remount the winches.

Not really very flat anymore.... The deck paid the price.

I used a 3/4" pine board as a surrogate for a cored deck and tightened a collection of 1/4" washers untill the first damage to the wood, and until failure. To no surprise, common washers, fender washers, and HDPE were glaring failures, and FRP and thicker metal washers were fine.

This looked fine to start, but within hours it started to bend and within 24 hours is was bent worse than the SS fender washer. This could lead to a hidden failure if not monitored (1/2" HDPE)

(click to enlarge table)

And then there is always the matter of what happens in wet places. Though I like aluminum for ease of fabrication, I also know its limitations.

This bow cleat is a little shaky.

Idea Drive

I'm always looking for things to investigate, either product reviews or engineering problems.


A few that are in progress.

• Bucket dust collector. I made a trap for bottom sanding dust that goes between the sander and the shop vac, keeping the filter clean. Also good for pumping liquids.
• Tall step disease. How boats have more access issues than they need to.
• Outland hatch covers. I like them.
• Gaffers tape. Good stuff, outlasts duck tape years vs weeks. 
• Mooring. Quantitative testing of the effect of spring lines and such.
• Catnip oil as fly reppellant.
• Aluminum and zinc anodes. 1-year test starting soon, brackish and fresh.
• 
• Spill prevention. A few tools to prevent spills while refueling. So far I really like the shaker siphon.
• Affect of additives on polishing. Some make filtration easier, some make it worse.
• Stitched eye and thread UV follow-up. I'm going to break samples after 2-years in the sun.

 A few in the thinking stage.

•  Boot drier. There are commercial systems and home-built.
• Aluminum treatments (Alodine1201, zinc chromate, TefGel and more. Salt humidity chamber and old mast sections.
• New Stiletto 27 review. They are going back into production!
• Kayak review. Trying to get a line on some inflatables.
• AC installation.
• Seafurl bearing maintenance.
• Climbing mast from a climbers perspective. 
•  

_____________________ 

Ideas? Questions? I've got too much time on my hands and I need to do something with it.

Product Review--Mantus Bottle Opener

As you know, I write serious product reviews. When I read this on SailNet.com I was devastated that I didn't think of it first:

-----

(from SailNet.com)

Mantus Review

The other day I received some equipment from the guys at Mantus. Note, I have no affiliation. I do have one of their anchors, yes, but this review isn't about their anchor. There are enough threads out there on them. I'm talking about the Mantus bottle opener. It was actually free for a clever begging campaign, so any negative comment on my part is rude, however, there are no perfect tools for boaters; the opener has its faults. The product came well packaged and in a timely fashion for an overseas delivery. After unwrapping the package, I could easily see that it's a beautiful design and fitted well in my hand. Storage would not be complicated which is an asset for any boat owner. It also had a clever loop for a chain to possibly be used as a cool bling bling necklace, but I digress. It worked very well for the first 6 beers or so, but as the evening's enjoyable extensive testing progressed, and interesting attempts to keep notes for this review proceeded, it became increasingly difficult to operate; however, not insurmountable, they were enough however to give me a powerful headache in the morning because I couldn't totally figure out the problem. For some reason, it kept slipping off the bottle tops and wouldn't properly set. After 4 or 5 more beers (I think) it became useless to operate so I went to bed. The tests were inconclusive (actually I misplaced my notes), so it looks like I'll have to do further testing to retrace my steps again this evening. For now though, I am impressed overall with the design and would recommend it to fellow Sailnet members. Thank you Mantus. 

-----

I'm too old for this particular type of testing, so I'm thankful that younger sailors are willing to step up. I'm not sure the above tester is qualified however; I can't recall any opener failing me at any point, but perhaps I was very determined... or perhaps I just can't recall.



 

Tying-up

As I begin work on a mooring project (related to anchoring--it seems easier to the sailor, maybe, but it's longer term and the boat is unsupervised), I consider what is work teaching. It's easy to point at bad knots--and I will do that--but serious failings are often more subtle. Take these owner's manual drawings for the PDQ 32:

Note: I have BOLDED the lines in each case to draw the eye to the triangular patterns. Perhaps it makes it easier to visualize the load sharing.

Between Pilings. Very conventional, but still there are obvious failings. All of the lines should be nylon, roughly the same size. Some authorities suggest that the springs can be lighter, based I suppose on the fact that the bow-wind and stern-wind loads are lighter. However, in the event of a breast line failure, you'll wish they were full strength.

1. The bows are too close to the dock. There will certainly be slack, to allow for tide and wakes, and this boat will hit.
2. The slip is too small. I'll assume this was illustrator license, but clearly the stern piling are a problem.
3. The bow line and stern line angles are too perpendicular tot he boat. They would take some strain off the springs if the angle were less. Additionally, the boat would be safer if any one line broke.
4. Where does the dingy go (the lines are going right through it)? The answer on the PDQ is to add deflectors down low, inside the stern, to run the lines under the dingy.

There are also many positives. A lot of redundancy, more than seems obvious.

1. Greatly reduced motion and loads. I'm waiting on windy weather to take load readings both with and without the springs.
2. If any one lines break, the boat is still well controlled, depending on slack.
3. With any 2 lines broken, even next to each other, the boat will not hit anything, if the slip is properly sized. I've tested this both with models and full scale.
4. With any three lines broken it may rub on one piing, but will not go far enough into the next slip to strike another boat. With good rub rails, you are probably OK. 

Alongside. Also conventional, with some of the same failings.

1.  Where does the dingy go? Same solution.
2. No fender boards. While not needed on floating docks, they are mandatory if tied beside pilings. 
3. Bow an stern line angles should be greater, in case the spring fails.
4. I believe the springs (alongside only) should be polyester. There is no need to absorb shock and the main purpose of the spring is to keep the boat positioned properly for the fenders to match pilings. Even with fender boards, sliding fore and aft is asking for trouble. As it is, the boat will still move fore-aft a foot or two with the tide, since the spring will describe an arc of a circle, where the radius is the half length. 

The bad thing is that a single failure will move the boat enough to pop a fender out. What Would I do for storms?

1. 2 fender boards. for pilings, lots of fenders for floating docks.
2. Additional springs. Either from the bow and stern forward and aft, or if length does not permit, from the mid-point of the dock to the bow and stern cleats.
3. Additional breast lines But I would not change the angle much; An angles breast line increases the pressure on the fenders in an end wind.

But mostly, this is a good plan. There are no short lines, so shock and tide are attenuated. No single failure is fatal (assuming the slip is a little bigger).

----

This advise from West Marine, is just lame:

• The power boat should have springs to both sides.
• The stern lines should be crossed
• The Sailboat should NOT have a spring line anchored to the chain plate or the winch!
• The breast lines should be perbendicular to the dock (less leverage on the fenders.

In other words, not much is right. I sure hope it is a floating dock, but even so....

Check Your Gear

This is climbing gear, failed years ago, but the message applies to sailors. I have cracked toggles, cables, and shackles. These sit on a book shelf, across from my favorite chair, as visual reminders.

Fatigue. In this case it seems clear that the latch pin was fitted a bit too tight, and after some years, started a crack. since the strength of a carabiner is dependent upon gate integrity, this one was retired, certainly only a fraction of it's rated strength.

Open gate strength. This biner snapped during a fall when the gate was pressed open by a bump on the rocks; with the gate open biners loose 50-80% of their rated strength, depending on the design and how they are loaded. Fortunately there was a back-up and there was no serious consequence, just a clear lesson; the gate MUST be protected from even light contact.

Wind, Fetch, Height, and Period

A steady swell is a rare thing for most sailors. We spend most of our time in confused seas, the result of variable winds, diffraction affects from shorelines and bottoms, tidal currents, and wakes. Still, when working through the anchor testing series it was sometimes necessary to predict what I would find at a certain place and time, so I could be there and test what I wanted, when I wanted.

For example, a steady 40-knot squall lasting 30 minutes (fetch is the distance waves could have traveled during the squall, or about 4 miles) will generate steep waves of about 3 feet with a period of about 1.7 seconds. Those same waves generated by a 15 knot wind over a long time would have a period of 6.5 seconds and would be far more pleasant, and 40 knot winds given a long blow will generate mountainous waves I hope never to see; the largest I've sailed in were about 10 feet, and that was enough. I think I could go the rest of my life without winds over 20 knots.

A Poor Solution to Non-Problem

For most of us with all-chain, simply getting the chain straight between the anchor and the gypsy will keep the anchor coming up straight, perhaps with an occasional un-twist (lower and re-hoist) if we have spun. Some like swivels. But then there are bad solutions:

While this gem is only offered up to 22-pound anchors, the leverage  in a side pull, should the anchor get stuck, seems pretty rough on the bolt at the anchor end. Worse, it adds 6 inches more length to the anchor shank, increasing the odds of bending or breaking out.

Raspberry Award.