Tampilkan postingan dengan label cq32. Tampilkan semua postingan
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Kamis, 10 Maret 2016

The need of keeping water out of the bilge of a metal boat

I always start my surveys on metal boats by using Thermal Imaging of the hull. This helps me locate the structural components of the metal boat. I am also looking for trapped moisture and/or water. If this is found, then there is a good chance there will be corrosion. Next I conduct an inspection of the bilge of the boat, including, anchor, sail, cockpit lockers, and lazarettes. Now I have a very good idea where to concentrate my UTM-audio gauge. I take readings of the whole hull, but will do more readings in the areas of concern.

When I see water in a bilge of a metal boat beyond what might be in a sump I get concerned. I would like to see dry bilges on all metal boats, but this is not always possible. On Tuesday I surveyed a steel trawler. Overall this boat looked to be in fair condition, but then I saw the water in the bilge, a lot of it! There was heavy scale in some areas because of the standing water.  I knew this was an area I needed to spend some time getting thickness readings.

The next day I did my audio gauge. My readings indicated plate wastage. In some areas I could not get a reading that most likely is caused by heavy scale. My visual inspection from inside confirmed the heavy scale. When I arrived at the boat I noticed some weeping from what I hoped was paint blisters. Then an hour later water stared streaming from one of the blisters. Just to think only the paint was holding this section of plate together.

The good news! The boat was out of the water it will not sink. Steel boats can fixed; by cropping out the bad plate and adding new. In a short period of time, she will be underway again.

The moral of this story? If you own a metal boat keep an eye on the bilges.

I will post photos in my next post.
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Carrying A Dinghy On A Boat

My situation is a little unique.I am building a boat and a dinghy.Carrying one,however,has presented a challenge because of my boat build.Most boats use a davit system and carry the dinghy on the swim platform or transom.Some carry them on the roof.At first,I thought the roof would be a good place,but as pointed out to me on a forum post,its not.Carrying on the roof can make for a dangerous situation in rough water.Its hard to launch a dinghy while its swinging on a boom or crane.It could crash into the boat and break stuff.It could break loose and hit someone or sink.In an emergency,the boat could sink before getting the dinghy in the water, taking the dinghy down with it.

Most production boats have a lot of freeboard or height of the sides above the water.The boat I am building doesnt have much freeboard at the transom compared to production boats.Because of my boats lower freeboard than most, presents some major challenges for carrying a dinghy.I cant run a full width swim platform because my I/O comes through the transom right in the middle of it.This rules out swim platform dinghy lifts.A transom mount davit could possibly work,but it would be of my own design.Production davits wouldnt be able to lift the dinghy high enough to clear the water or I/O,at least none that I have seen.Then there is the issue of carrying the dinghy across the back.The dinghy will be longer than the boats beam is wide.This could cause problems when in tight marinas or narrow channels.Any of these options would severely limit my rear visibility, thus blocking my transom and preventing my boats name from being visible to other boats.I do plan to tow my dinghy, on the days I plan to use it,if the weather is good.

Some have suggested that I go with an inflatable or folding Porta boat.Ive had issues with inflatables in the past and they are heavy for their size.Some folding boats are a little to flimsy to really carry any weight.I need to be able to carry roughly 800 to 1000 pounds.I dont think its possible,so two trips to shore will be required.Maybe I could pull a ski tube behind the dinghy with our supplies in it.Wait,I know!Ill toss the kids in the ski tube and put our provisions in the boat.They will love that.

My hull draft will only be 16 to 18 inches,so I could possibly drop anchor and wade to shore.Im not sure how my significant other and our kids will like that.Got to keep Mama happy,LOL.When I am in a marina,I will more than likely moor the boat, while we go ashore for provisions.If the area will allow for it,I could beach the bow and let everyone off ,moor the boat,and take the dinghy back to meet the family.When we return,I could take the dinghy back to the boat,bring the boat back to shore,and load up.Seems like to much work.Some places will allow boats to temporarily dock for a quick trip to town for supplies.that would be the ultimate solution.

I still have a while to go before I make a final decision on how to carry a dinghy.Until then,I will be looking and watching other boats and how they carry a dinghy.Im always open to suggestions.


UPDATE!
After some discussion on the Trawler Forum,I am considering adding a rear rack to carry my dinghy and to hang the rear canvas enclosure from.I feel that this rack needs to be removable.I only plan to carry the dinghy when I do the Great Loop Cruise.Every where else I will be able to dock or trailer the boat out.Here is what I had in mind for those that are scratching their heads trying to figure out what I am rambling on about.





More info on the boats in the picture can be found at Allweather Boats.





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Minggu, 06 Maret 2016

March 5 10 Six Lay Days in Fort Lauderdale Zero Miles

Dinner at the Downtowner, across the river, under the Andrews Avenue Bridge, outdoors, ten feet from the River, after dark, with great atmosphere, twice. Here from the other side of the river, by day.
Once, just the two of us, and the second time with Craig and Kathy. Their 45 Amel Santorin ketch, "Sangaris", is now back in Florida after they have spent the last fifteen years living aboard, as far away as the Galapagos in the Pacific, and throughout the western Med. Craig is a Past Commodore of the Harlem, now an honorary member. They have more miles under their keel than all the rest of us Harlemites put together. I was pleased to tell him that ILENE is the second most sailed boat in the Club. I raced a few times with Craig and Kathy on their old boat "C-Jack" and learned a lot about how to do this thing. Yelling never helps when things go wrong, as they invariably will. Quick, calm instructions on how to fix the problem is what is needed. We enjoyed some wine etc. aboard before the Downtowner.

We also enjoyed mango-sweet potato pancakes with Lenes HS classmate, Elissa and her husband Len, This was the advance guard of Lenes Lincoln HS class of 67 reunion in Boca Raton next week.

Since we left New York I have been meaning to shorten the length of the strap at the tack of the Genoa, to pull that sail down
about an inch in order to be able to stretch out its luff (front edge) more fully. I think that the sail has simply gotten stretched out a bit during the many years of heavy use so that unless I lowered the bottom, the top would get stuck and interfere with furling. I took advantage of access to the tack of the sail from the dock on a windless morning to do this job, doubling the bottom of the strap back upon itself to create a new loop to shorten it. It was too difficult to force the needle through the tough doubled multi-layered strap, even with the palm. So I used fewer stitches than I had planned and other methods to attempt to achieve this job. Time will tell whether the sewing will be strong enough.

We contacted canvas shops to try to get what Lene has sought since those cold days on the way south -- a cockpit, fully enclosed by clear plastic, which will warm up without the cold wind blowing freely through it. The boat came with five panels of mosquito screening to keep out the prevalent pests in the hot summery months in the Chesapeake, where the original owner kept this boat, then called "La Vie." I put these panels up once, on a rainy day, about eight years ago. So I knew they fit. But they did not keep the rain out, nor the wind. The plan is to use the existing Sunbrella canvas "frames" or "hems" around the outside of the panels, but cut out the screen material and sew in sheets of clear strong plastic. I put the panels up and took measurements and photographs. We sent what we have back to Doyle Sails on City Island who will do the work and send them back to us. Best price plus friendly knowledgeable local work at home.

"La Vie" is a lovely name for a boat, by the way, "The Life". But it was not as good for us as ILENE. It is said to be bad luck to change a boats name, but I have changed the name of each of the three boats I have had. The Pearson 28 went from "Y Knot" to "Just Cause".  The Tartan 34 went from "Alsterwasser" (the favorite beer of the late husband from whose widow we bought her) to "ILENE", as did "La Vie."

Carlos walked the dock, gave me his card and offered to clean and wax the exterior of the boat including the stainless, from the waterline up.  Cleaning is work that I can do, though in hindsight, not as well as Clarence. And though I can do it, I seem to not get around to doing it and  I have never gotten ILENE as clean and shining bright white as Carlos has. She had not been done since last spring. Carlos worked, with power polishers,  the better part of three days, and the money was well spent.

I learned a lot at the New River Hotel, now the history museum, located in the former small modest cinder block hotel beside the former Florida East Coast Railroad depot. The FEC still screams past, many times per day, over that RR bridge, right outside the hotel, but they are freight trains and do not stop at the former passenger depot. There are plans to run passenger trains from Miami to Disneyworld over these same tracks. But there is some opposition to the plan because it would require the RR bridge  to open an additional 30 times per day with the loud train whistle reverberating at one second intervals while the trains pass through the heart of the city.
The train runs near Cooleys Landing, because Flagler couldnt persuade the Brickell family, who owned Broward County, to sell him a right of way closer to the coast. And that is why Flagler did not build his typical Flagler pleasure palace hotel here and this one was built by others. There was indeed a fort here, three of them in fact, one after the other, named after the commander of the first fort, one a Mr. Lauderdale. Most of us think of this place as a beach town, which it certainly is ("Where The Boys Are"), but the town grew up by the New River, where we are, several miles west of the beach. The river got its name, according two two competing legends, either (A) because an earthquake caused an underground stream to rise to the surface, i.e., a new river, or (B) because the mouth of the river kept shifting, causing it appear as a new river each time it was charted. Neither story sounds true to me. Cooley, after whose landing our Marina is named, was a local merchant and Justice of the Peace. He also operated a large facility extracting arrowroot from the roots of a plant he grew. When some drunken settlers killed an Indian, he had the culprits arrested and brought to trial. But he lost the prosecution because his only witnesses were Indians, and they could not testify in 1835. The witnesses were upset and blamed Cooley. Some time later they killed Cooley and his family. Class dismissed.

We prayed on the sabbath with Lenes cousin, Jeff, at Temple Beth Am (house of the people) in Margate.. Jeff is an officer there. The service was in the Conservative tradition, in which I grew up and belonged for the first 30 years of my life. Many of the melodies were familiar to me. The Rabbis sermon was timely and excellent, drawn from an essay whose author he credited.
The current spat between the Prime Minister of Israel and President Obama and Senator Boehner who invited Netanyahu to address Congress without asking Obama, was nothing but a bunch of politicians ALL behaving badly. They all agree that Iran cannot be permitted to get a bomb and that Israels security must be assured.  He traced the history of the U.S. - Israel relationship and showed that it was not a warm one until the 1967 war; that the chief suppliers of arms to Israel until then were first the French and then The Soviets via Chechoslovakia.  But, having failed to pacify Afghanistan or Iran after almost 15 years of trying, the U.S., under Obama, has moved to a policy of requiring the four major powers of the region to buffer each other and balance each other out, with U.S. air strikes providing a bit of assistance, to assist ground troops of the local rivals. The four powers in this regional analysis are Turkey, Israel, Iran and the Saudis, none of which like each other, and all of which have cause to hate ISIS.  The spat between Israel and the U.S. comes from Israels feeling of loss that that they were the favorite of the US.  Yet there are many hawkish right wing Jews in the US who hate our President for many reasons. Jeffs Rabbi is to be commended for not joining them.

 After services we had lunch with Jeff, his brother Alan and their Mom, Naomi, at a Chinese Buffet that Naomi craved. This was her first outing since our December visit, when she was in rehab for a broken pelvis. After eating too much we were driven back to Naomis house to pick up about six packages which we had shipped there and then back home to ILENE, for the rest of the rainy day.

I walked to and on the beach one day, via Las Olas Boulevard. Well, a quarter of the round trip was a ride, from the Post office, where I had walked to send off the screens. to the beach. I passed the art gallery district including Pococks, whose owner, though British, like George Pocock, was not related to that famous builder of cedar rowing shells featured in "The Boys In the Boat." I told him that he would enjoy the book.  On the beach I walked north, past the most crowded spot, called "Beach Place," covered with young bikini clad women and men who desired them, then past a gay section of the beach and finally a much more sparsely blanketed section by the Westin Hotel, featuring older people and families. On the way back, along Las Olas ("The Waves"), I noticed the towns logo: a boat with a spinaker on the bow and a phoenix or rising sun as the main.
I walked past the ends of the many canals that were dredged to Las Olas Blvd. and visited an open house in this almost completed new 7488 square foot home. It can be yours for less than $7M. Nice spot to dock ILENE comes with it. But not for us.

We had wine and then dinner aboard with my only nephew, David, who this lousy under-lit photo does not do justice, sorry Dave. He lives with his lovely wife and two kids in Atlanta where he has a business, but is also a partner in a business in Boca Raton and works here three days (two night) per week. He had a weekend with his father aboard "Just Cause" back in 1996, from City Island to Northport and back, but had never seen ILENE. 
We have several more days here in Fort Lauderdale.
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Jumat, 26 Februari 2016

Jet Propulsion for hydrofoil or maybe a prop and flex shaft

Very cool control system



The drive with the angle reduced improves losses 20% 4.3 Amps idling so only 300mA losses from the shaft. I think the steering should be integrated as a kitchen rudder behind the prop.




Reversing the shaft on a Turnigy D3542/4 Aero drive It a 1450 KV and should deliver loads of torque at 14,000 RPM on as 3C



Battery: 2~4 Cell /7.4~14.8VRPM: 1450kvMax current: 48A No load current: 4AMax power: 690WInternal resistance: 0.019 ohmWeight: 130g (including connectors)Diameter of shaft: 5mmDimensions: 35x42m



Above is a 47 mm prop I have a 57 to once I have the motor attached to the shaft sleeve I will do a power test in a tank see what thrust and Amps I get. With the fat end of 1 HP it should have plenty of clog to lift  it up on the foils.




The shaft is running in a good quantity of copper slip. Ran it on a 4C for a minute an the brass only got warm.



I think the body of the hydrofoil will be a lunch box. I think I will have the prop shaft attached to the rear foil

Perhaps the prop on the above can be placed in a tube like these designs



An interesting jet outboard very high outlet must cost power




Jet Propulsion for hydrofoil  





One thing as there is no transom the bulky scroll will always be in the flow and the outlet will be under water which will reduce the trust considerably.


If the outlet was up high it would work better also the riser would need to be streamlined







Or what about an EDF pumping air into a venturi like below





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Selasa, 23 Februari 2016

We Are OFF! NY to Annapolis October 8 10 268 Miles

Our first problem was discovered when we had to use the dinghy to go to dinner on City Island because the Clubs launch service ends at 6 pm in the waning days of the season: it started right up but stopped in five seconds. So we paddled.  And the night of the seventh was unpleasantly rocky on the mooring due to strong SW winds kicking up big chop in Eastchester Bay, impeding sleep.

The passage was from 9:45 am on the eighth until 7:30 am on the tenth, 45.75 hours with a two hour "stop" to be discussed later, so 43.75 hours underway. The first of the two days (NYC and the Atlantic coast of New Jersey) was warmer than expected for the season, both day and night, with sunny clear skies and a big full moon; the second of the days (Delaware Bay, the C and D Canal and Chesapeake Bay) was raw and cloudy but not frigid and not rainy. This chart, created by Jims Spot device shows our route, except that it connects the dots every four hours or so and hence cuts off the corners and shows us crossing land. [Image to be added.]
We actually left, after mango pancakes, about an hour too early due to my impatience so we did not experience the favorable tide while we fought strong headwinds until near Hellsgate when the tide started flushing us out of NY Harbor. A tug with four barges (2 x 2) came up behind us near Hellsgate and called ILENE by name to advise that we would apparently be going through Hellsgate together and that his four barges would be swinging to port. I did a short 360 degree loop to let him pass and observed that his tow did indeed sweep far to his port side and "crab" through the most problematic tidal strait of the passage on a diagonal. We passed parallel to the FDR Drive with its snarled traffic on which I drive so often to get to the Club.



Here is the Freedom Tower to the left, currently New Yorks tallest structure, and a tower of the Brooklyn Bridge to the right, which held that title in the 1880s.






We put up sails, starting with double reefed main and small jib, after we passed Governors Island and we were on starboard tack all the way to Cape May, though we gradually shook out the reefs and changed back and forth to the genoa when passing through periods of apparent winds of 20-25 knots and periods where they were in the mid teens. The Verranzano Bridge, our ninth of the passage, was emotionally my last point in New York until around May, 2015.
Unlike the similar passage on Pandora about two weeks before, on which the wind was never forward of the beam, on this trip it was almost never aft of the beam, though rarely close hauled and predominantly about 60 degrees off the bow. 

Jim, who made the trip on both boats is a great man to have aboard. He is a fellow Cornellian, an engineer and very knowledgeable as a sailor though he wears his experts mantle lightly, without a trace of the arrogance that some experts have -- laid back and a pleasure to sail with. He agreed to my request to sleep the earlier part of each night and stand the later night watch.  During our first night I was "racing" a green light that started off our port bow. At times he would get ahead and by changing sails, at times, I would get ahead. Our speed varied from 3.5 to 8.1 knots depending on the wind. When very close I hailed the "sailboat with another sailboat on your port quarter", identified ILENE and thanked him "for keeping me awake last night". He reciprocated the thanks and identified himself as "Momo" a Valiant 40, here shown off  Wildwood,
bound for Florida with a planned stop for a day in Cape May harbor. I told him I hoped we would meet up with them in Florida or along the way. He is a very good sailor because ILENE is a faster boat but he kept up.

Jim took the watch for most of the passage up Delaware Bay, in which we avoided the worst of the adverse tide. Having rounded Cape May at about 9 a.m., using the inside passage a hundred yards off the beach, with main and engine but no headsail, Jim suggested a diagonal course, away from but toward the shipping channel at Miah Maull light, after which we stayed just outside the channel on its right side almost all the way up. A tug with barges ran near adjacent to us most of the way and we put up the headsail when possible to gain speed and sailed without engine, close reaching on port. Unfortunately, when the tug got ahead of us during lighter winds, we got long doses of his diesel fumes. About 5-10 miles before the Canal, when we are slightly ahead of him, I called on VHF and told him our plan to cut across his bow to get to the other side of the channel in anticipation of our left turn into the Canal and he replied "OK".

As we entered the canal Jim came up with the good idea to stop for a couple of hours to avoid the worst of the adverse tidal flow. We would tie up for free at a dock in the Summit North Marina on the north side of the Canal to have dinner in their excellent Aqua Sol Restaurant. And we shared a bottle of red and a nice assortment of appetizers while motoring in the canal. This is the same marina where ILENE spent a night on our last trip in June 2012 and where Pandora went in for fuel two weeks ago. But on our way in, going slowly, of course, we went aground. We used the preventer to swing the boom, with Jim sitting on its end, out to port, in an effort to tilt the boat and break us free. No luck, we were stuck hard. And we created this lead line, the old fashioned depth meter, out of a green divers weight, a wire wrap, a length of light line and red tape to mark where the wet part old the line ended.

Yep, we were stuck alright and it was mud, which you can see,  dried on the bottom of the weight. What to do? Wait for the tide to come in and float us off. I took the watch and two hours later, at about ten, I saw us drift, turned on the engine and woke Jim.  We motored to the inner end of the cul de sac, turned in the deep turning basin and headed out of there.  Then I slept for four hours until 2 a.m. while Jim took us out of the Canal and into the Bay.  I took the watch from 2 until 7:10 a.m., when GPS put us ten minutes from the red daymark guarding Back Bay harbor of Annapolis, where Jim lives with Ann and where we docked at Bert Jabins Marina -- where ILENE had stood on the hard during the winter of 2005 in which we bought her.
Ann came over to take us to breakfast at Grumps, an Annapolis breakfast institution, where no two coffee mugs ever match. But the Captain ordered another batch of pancakes and put Jim to work peeling mangos for the three of us.
Then how to best utilize the time before Lenes arrival at about 4 pm. Well the most critical task was fixing the outboard, the engine of our car. And it being Friday, when mechanics are at work, I searched and found Steve of A and B Yachtsmen, who disassembled the carburetor, cleaned the rust from it, and emptied our fuel tank and line. She runs again! We are across the dock from a beautiful Tayana 55, "Karina"
owned by Dr. Miles (both M.D. and a boat doctor) and Ann, who are leaders in the Caribbean 1500. Ann gave Ilene a lot of good advice about sailing with cats in 2010 and unfortunately their cat has gone to heaven. I introduced myself as a graduate of the 2010 run and he pretended to remember me and invited us to an Alumni reunion we attended that night.

Before that I washed Ilenes salt crust and New York grime and freshened our water supply, cleaned up the interior a bit and took a shower and a nap. Lene and Witty look happy to be here and we got a good nights sleep.

The adventure has begun!
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