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Super Efficient Boat Computer

I was needing an upgrade for my office computer for work and needed a replacement computer that was super power efficient due to the nature of limited electric power on a boat when using an inverter to power stuff.

Here are the components I used to build a system that uses 15 to 17 watts of power sitting at the desktop browsing the internet. The 24 inch monitor uses another 21 watts of power.

Nothing special about the case other than the USB3 ports on the front and the space size constraints of where I planned on mounting it in the boat.. Any Matx compatible case would work.

This memory is listed by model number by the manufacture of the motherboard as compatable. I spent a few extra dollars over the cheap memory but it is worth it to know it works.

I had a hard time picking a motherboard. There were several good choices but this one had more sata 3 and usb 3 connectors and was a bit cheaper than other comparable motherboards. So far I am pleased with it.

Here is where we get pricey. This power supply is one of the best of the best. It is rated platinum level which means it is 94 or 95 % efficient. It is fanless and even so after running for a month or two solid you can touch the power supply and it feels cool to the touch.

I already had a pcie ssd card in my old computer with ubuntu linux installed on it and I just moved it over to this computer. The same with 2 3tb data drives. I purchased this to hold a database that needed the fast access and larger size.

I went to order the i7-3770T processor but found the Xeon version of the same processor for 50 dollars cheaper. On checking the motherboard CPU compatability chart it said that it was compatible with the Xeon so that is what I got. This is teh 45watt 2.5 ghz version of the i7-3770. The normal one is 75watts at 3.5 ghz. However in benchmarks this one is only 10% slower.

This is the monitor I am running and it is a very power efficient model. I purchased it a year or two ago and have been really happy with it. The manufacture states 35 watts but mine and others measurements in use seem to consistently run around 21 watts.

I am running Ubuntu 12.10 and am absolutely impressed with how fast this monster is and how little power it uses. The computer burns just over 1 amp hour at 12 volts and the monitor just under 2 amp hours at 12 volts. I am currently running it plugged into a ups that measures wattage and that is how I got my measurements. I’m not sure how much draw the ups is drawing over that amount at this time. If it looks as if this system is losing a lot of efficiency I might go to a direct 12volt power supply and take the 120 out of the equation.

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The Ergonomics of Living on a Boat,Spice and Tea Racks

We have been living aboard for a year now. It has highlighted some of the drastic downfalls of boats and storage. The Downeaster 38 has a huge amount of storage space,however it isn’t particularly of a shape or size to make efficient use of. We are gradually rebuilding all the storage compartments etc into better shapes to hold particular goods both efficiently and securely. One such project that I just finished day before yesterday was tea and spice racks.

I like to drink hot teas and being me go a bit overboard on the acquisition and storage of lots of different loose leaf teas. I have about 40 plastic containers with O ring seals with tea’s in them. At the house it was no big deal,I had a cupboard that they all neatly stacked in. On the boat there is no cupboard the right size and being that it moves they would fall over anyways and end up in a big jumble. In real life I found that a big jumble just due to the shape and size of the storage areas available was how things stayed.

I also like to cook and tend to have about a dozen spices,oils and other condiments that I use on a daily to weekly basis,with another 20 or so that I use weekly to monthly. Again,can we say jumble. I could never find what I wanted.

This state of affairs both in the teas and the spices tended to leave me a bit grumpy and irritated at having daily usability issues. If something is bad enough that it is affecting my outlook on life then it needs to be fixed. What to do though? I really didn’t like the cabinets as a solution as small stuff gets hidden behind other stuff,it all falls down and slides around and;well lets just say jumble. We had a little spice rack shelf over the stove/under the window. It just wasn’t the right size and the capacity was about 10 small spice bottles. I finally took it out and moved it because it just cluttered the area up to little return and made it harder to get into and see into the cabinets behind the stove. Setting stuff on the counter tops is obviously not a solution. We had some big plastic O ring sealing containers that we could put the spices in and store under the settee’s,but,again not an efficient solution. I hate having to dig under the settee for stuff.

Finally I noticed these two big empty areas on the rear cabin bulkheads just over the fridge and behind the chart table. They were covered in vinyl headliner which we had already made plans to pull down and replace with a wood panel. What if we installed the wood panel and screwed some shelves designed for the tea containers and spices there. But there is a problem. the spaces are not square and the cabin side there leans forward at about a 10 degree angle. If you put shelves there then anything on them would want to slide right off  the front of them without a fiddle board or some other positive method of retaining them. At an angle like that even a little bounce would probably bounce stuff over the fiddle board as well. Then all those spices bottles would clink clink clink as the boat rolls and moves on the ocean.  Not to be stopped in my desire to make that space work,I came up with a design with no fiddle board,but with individual bungee loops for each container that holds it against the back of the shelf. The boat could turn upside down and nothing would fall out and with each container and bottle individually held securely,there would never be any noise from bottles or containers clinking against each other.

We ended  spice rack on portside in the galley that could hold 36 spice containers and various bottles. On starboard a more vertically oriented set of shelves could hold approx 50 of the plastic containers holding tea or spices.

Here are some pictures of the build process. It took a few days to finish due to the multistage process involved.

 

Starboard aft cabin face with wood lathing being glued into place. Panel and shelves will be screwed to this.

As you can see above I epoxied 1/4 inch thick oak lathes to the perimeter of the space the wood panel and shelves are going to be mounted on. I had some oak scrap sitting around and ripped it on a table saw into quarter inch thick lengths. I then treated all the lath with penetrating epoxy to permanently protect it from water damage,mold,mildew etc.. After that cured I cut four lengths per side for port and starboard and epoxied them in place as show above. I used a Raka two part Fast cure epoxy for all the epoxy usage in this project other than the penetrating epoxy which was cpes or rot doctor epoxy. To make a bog of the epoxy to glue the wood lathe strips down I just mix in some sawdust to get it to a peanut butter consistency.

Starboard wood panel in place

Here is the starboard panel screwed into place to test the fit and to mark all the mounting holes that will need to be drilled. I held the shelve units against the panel and traced both sides of all the perimeter boards and shelves onto the panel. Then went back in and drilled my holes in the panel from the front side while it was temporarily mounted. Once all holes had been drilled both for attaching the panel to the lath strips and for the shelves to the panel,I took the panel down and ran a couple screws into the shelves from behind the panel to get the shelve alligned with the marks I had made. I then used the holes in the back of the panel to guide a countersink drill to pre-drill all holes into the shelving. .

The panel is made out of a high quality luan/underlayment from Lowes at about 20 dollars a sheet. I have used this in other projects and it is very resistant to warpage or de-lamination due to sun,water etc.. The template to cut out the panels was made with paper that I taped up and cut out to the shape of the bulkhead. I cut the panels out with one of the harbour freight multifunction tools that cut by vibration. Both panels were treated front and back with Penetrating epoxy to give permanent protection against water damage,mold,rot etc.. Once the penetrating epoxy cured (about two days) I then painted the exposed surface with a clear two part epoxy to give it a clear gloss. I had not painted it at this point shown here.

Portside Wood panel in place.

The same procedure was used on the Starboard panel

Spice rack. Made of a luan panel with a teak shelf screwed to it.

Here you get to see the starboard panel and shelf unit just before it is mounted to the bulkhead. The Shelves were made of some 5/8 inch thick teak boards I purchased from a friend for 35 dollars. I Cut them the depth I needed and then ripped the 5/8 inch board down to just over 1/4 inch thick boards. I used #6 stainless wood screws countersunk into the shelves to screw them together. The port side shelves had some exposed screws and I used #8 bronze 3/4 inch screws there. I just thought  the bronze would look better than the stainless. The shelf units are attached to the back panel with #6 3/4 inch long stainless screws run from the backside into the edge on shelf frame and shelves. I used a lot of screws and it is very securely attached.

At this point I figured out the spacing of the holes I would need to drill to weave the bungee in and out of the back of the unit so that I had loops to hold the tea containers and the spice bottles and other  containers. There are 48 holes drill just in the left hand side of these shelves. I tried something different at my wife’s suggestion on the right hand side where you just see four vertical runs of bungee. It is working so far but we will have to see how it does under way bouncing around. The left hand side there will be no problem with,but it was much much more labour intensive to do. Between the port and starboard shelves I used in excess of 60 ft of bungee cord. I routed and or sanded the outer facing edges of all the shelves and gave a good sanding to the shelves and frame. I have not treated the teak with anything yet but will probably use some tung oil on them before long.

Starboard side with reflectix taped into place and headliner held up at bottom ready to be screwed down under the wood panel.

One of the goals of this project was to upgrade the insulation. The old headliner was vinyl with an air gap between it  in the overhead and on the sides of the hull some 1/4 inch thick foam.. It actually worked quite well for what it was. We decided to use 1/4 inch thick Reflectix insulation. I cut it to the exact inside dimensions of the lath strips and then taped it down inside that area all around the perimeter so that it is sealed air tight. I just used a high grade duct tape to do this with.  I then pulled up the headliner that we didn’t cut out and taped it up so that when we screw the panel down,it will secure the headliner between the panel and the bottom piece of lath.

Empty Tea Rack on starboard. Bungies showing.

Here is the finished unit mounted in place.

Starboard side tea rack.

Tea containers in place. You can see the gloss of the epoxy coat on the panel behind the tea containers.

Portside with reflectix insulation taped into place and vinyl headliner pulled up so that when the shelf unit and panel are screwed down it will go through the vinyl headliner and hold it in place at the bottom.

Portside reflectix in place.

Empty spice rack. You can see how the bungie cords is woven in and out of the back panel.

Portside spice rack and panel mounted. Again you can see how the bungees are woven through the back panel. I did it differently on each panel. Starboard on the tea shelf the bungee holes are side by side. Because of the design of the containers I had room to do that and it holds them more securely. However on portside for the spice rack the bungee holes are one above the other. Most of the spice bottles are straight up and down in design and it took up less space between them to run the bungee back and forth through the back panel this way..

Spice rack installed

Here you can see the spice rack with bottles,jars and containers of spices in place. This shelf has a depth of 2.5 inches. I sized it according to the largest diameter container that I commonly would have on it. The starboard side tea rack is 4 1/4 inches in depth to match the containers I use for storing tea. If you click on the image and look at the full size image,you will see the screws and washers I used to attach the panel to the wood lath strips behind it. I again used #6 3/4 inch stainless screws and matching stainless finishing washers to give a nice appearance to the exposed screws.

Finished Racks with Tea containers on starboard and spice racks on port.

Just to give you an idea of how the finished shelves with stuff on them looks. As you can tell we haven’t finished replacing the headliner in the overhead just in front of the shelves so please pardon that part of it. Soon there will be drop down bins  built into those areas both port and starboard for more spice storage and misc other things.

We were worried how theses shelves would look and function,but I was determined to try it out as we really didn’t have a better solution we could think of. I wasn’t sure how they would look with shelves leaning forward and angle down at the outsides as they follow the incline of the back cabin face and deck camber. However once they were up the give a nice symmetrical appearance,that I at least like. They are a bit busy with all the containers of tea and spices exposed. However I already have in mind another project to put some doors made out of dry erase white board material over them. This would lighten the area back up and also give us a place to create shopping lists,or note down navigation details until they can be transferred to the log book. All in all I am very please with this project. My total cost was somewhere in the neighbourhood of about 100 dollars for both sides for the materials and I have about 15 hours of labour in it spanning a few weeks between ripping out the old headliner,templating,cutting and treating all the materials used and then installing it all.

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High Tech Towels

We were having space storage issues with our regular towels as well as them staying damp forever. I did a lot of reading of reviews on a lot of brands of the new high tech towels and finally came down to the Discovery Trecking brand. They were very expensive and the only reason we ended up getting them was a gift card we got. We bought 5 of them and it is all we have used now for the last 6 months or more. We purchased the largest size they had and it is huge. I probably would have tried the next size down if I had known how huge these are.  Remember I’m saying that as a 6’2″guy. In retrospect I would now spend my own hard earned money for them.

The Good

  • 5 of these take the same amount of storage space as one of our cotton towels did.
  • Even as big as these towels are you can fold/roll one up small enough to stick in a pocket.
  • These towels are also the silver treated anti-microbial kind that don’t grow mildew.
  • We just wash and dry them with the rest of the cloths and they seem to take it just fine.
  • Using them is a bit different than a normal towel. they sort of stick to your skin as your trying to wipe yourself off and end up kind of just rolling over your skin. You get used to it and I think it works as well if not better than normal. It’s kinda freaky amazing how dry they will get you with just a single swipe. If you give three or four really good rubs to your head it leaves your hair very dry also. :) assuming you have short hair like me I guess.

The Negative

  • The negative is the cost. They are expensive comparatively. We bought our very nice thick cotton towels from a guy selling them in at a flea market for 2 dollars each. You can get cheap wall mart towels for 4 or 5 dollars. I just hope these last for years seeing we laid out about 130 dollars for all 5 of them.

Conclusion

So far we are very very happy with these towels. They dry us very well,they dry out very fast,they haven’t ever gotten a mucky odor and they take up very little space. Here is a link to where we bought them on amazon. Given the free shipping they ended up cheaper from there than anywhere else at the time we bought them.

Discovery Trecking Towels

Scott

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Website/Server Maintenance Complete

Just to let everyone know it was Saturday before I was able to upgrade the server but everything went very smoothly. We went from 4 gigs of ram to 32 gigs of ram on the physical server and I gave the virtual server that runs the website on 6 processor cores and 12 gigs of ram to run on. The results have been stellar. The website is much more responsive than in the past.

Scott

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Tondelayo Updated

David Gill of Tondelayo sent in some pictures of his current projects. I have to say they look nice. Below are a short description by him and pictures of each project.  If you have questions I’m sure you could get him to talking about it on the forums :)

 

Hi Scott,

I thought I’d send you an email with a few photos rather than trying to upload them into the forum.
These shots show how to make a “steam box”to steam bend timber. It’s really easy. All you need is a heat source eg gas burner,a pot joined to some Stormwater pipe and away you go. Note that I used standard PVC pipe which loses it’s integrity above 60 degrees Celsius and it still worked however I believe it’s possible to get better quality pipe that will handle the steams elevated temp.
Also,make sure you have a hole at each end to allow the release of the pressure that builds up.
The trick is to get your timber finished to the desired profile before bending. I was working with hardwood and trying to bend it along it’s width which is probably the hardest possible technique but I still got results. (I went through a few prototypes prior to succeeding.)
Happy to discuss further if anyone’s interested.
Here’s some shots of Tondy’s floor. It took a lot of elbow grease to sand it back to bare timber before applying 1 coat of a mould inhibitor then  3 coats of Feast Watson Floor Clear Polyurethane. The good thing about this product is that if I want to tidy it up in a few years it just needs a clean and a light sand then you just put a fresh coat straight on.
A word for the wise,If you can get everything out of the cupboards and cover all electrics before you start then it won’t be so hard cleaning up all the dust which gets in everywhere! Also if you can take as many parts home and work on them it’ll give them a better finish and you’ll generate less dust on the boat.
These shots show how I replaced the plywood with perspex on the companionway doors. I put 7 coats of varnish on so we’ll see how long it lasts.
I was lucky enough to get a Garmin 100i DSC VHF for Christmas so I decided to run new coax from the radio to the mast and fit a new antenna. I used Rg213u coax onto a new shakespeare antenna. It was very hard to run the coax down the mast and it seemed to get caught on everything and anything that was inside the mast. I think it ended up being approx 22m of coax back to the nav station so I’m glad now that I used it but others may wish to consider the thinner stuff although it’s not supposed to be used for runs greater than 20m. I think it took around 4 trips up the mast before we got it done. I wired up my Garmin GPSMAP76CSx and it works a treat. I can hear Sydney 80nm North of me and all my transmissions have been well received. It’s so nice to know that everything works perfectly.
When I climb the mast I try to use the two rope methodology so I have two crew/mates on the main and headsail halyards and I pull down on the halyards as they take the starin on the mast winches. If I get to a tricky spot eg at the top of the mast then they can winch me that last little bit. I can also take the starin on one line whilst I readjust the other if need be.
Regards,
David.
We decided to generate some more bench space in the galley so I removed the metho burner and installed two of those cheap Gas Canister burners. I know they have their limitations and safety risks but as we are not heading off around Australia for at least 5 years then we are happy to have the benefit of the instant heat and reduced space requirement. Eventually we will get a proper oven and cook top but for now it’s these gas cookers backed up by our Magma BBQ.
I made the bench top with a bit of construction grade plywood that was in the garage and some Tassie Oak trim which I shaped then screwed glued and plugged. I took it to a sheet metal company who supplied and bent the 316 stainless and I glued it on. A couple of coats of Sikkens Cetol HLS and we’re done!
We’re happy with the end result and the extra bench space.
David
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