Thank you for helping keep our boat afloat. See the 👍 button, please consider pressing it as you would be helping us out more than you know. We hope to see you again next week ❤
Sailing science, I feel like I missed the first semester, but your lesson was very interesting. There’s a lot more to think about than catching an afternoon breeze on a Sunfish!
Sailing Science 😍 She is getting there with her weight 💪 She's been responding positively to lightening her up, with the way she handles and speed. When we were down South near Fraser Island we brought everything out if the back hatches to see what we had onboard and go through everything. The first sail we ever did we only went over 4 knots, we are now hitting 8s, 9s, 10s, 11s, & 12s. 9 seems to be the magic number and when she breaks suctions from the water 😃 -Cait
Thank you, Frank! It's been amazing to see the difference as the weight goes off. We are working on slimming down and looking forward to sailing around the world on her 💙💙 She's proving to be a really great boat 🥰 -Cait
Cant wait to see your diet, everything about reducing weight will improve performance and increase the lifespan of all thats important. FYI it is said that Capt Cook averaged 4 knots on his global voyages in Endevour... that was in 1770's.
Hope we go faster than 4 around the globe! Very impressed to Cooks navigation skills especially along the Queensland coast until Cooktown! We've been working hard at reducing weight, we are looking forward to splashing and seeing how she goes! -Cait
@@sailingwiththejamess I have been rebuilding a M&W32sloop for long distance voyaging and been concentrating on strenght and weight. One factor I've been thinking of is to add a R/O watermaker to my build to reduce the weight of carrying excess water, expensive yes. Worth the effort, I don't know. Would that be on your plans, 1000litres equals 1 tonne.
@@rickpyne We've got a Schenker watermaker onboard, its been really useful and love the ability to make water while out at sea and it will be very useful when in remote areas. We've been working on Emma's diet trying to get her to design cruising weight, unfortunately the yard we are in doesnt have a scale so we didnt get a reading when hauled out, it will be very interesting to one day we will be hauled out with a scale and get the new weight of what she is! -Cait
Very interesting and informative I follow Ruby Rose Wynn's etc and 4 knots wouldn't go down well unless it was blowing 8 knots. Good luck with the diet 😂
Thank you!! Yes Ruby Rose is gorgeous! Half wind strength would be amazing! It's been amazing to see her respond positively to the weight coming off and being able to feel and see the difference in her 💪 9 seems to be a nice sweetspot where she breaks suctions and glides 🙌 💜💜 -Cait
Great videos guys, a vary interesting boat! Seems be be a lot of timber and I assume a lot of ply in the fit out why adds weight very fast. Are you looking at replacing some of the timber with some of the new foam sandwich type materials
Thank you! We hope to help others as well by making videos! Whatever we learn we will share! So happy to see you back every week, greatly appreciated 💜💜 -Cait
Yeah sorry it got super wordy and if I talk about wetted surface area then that leads into hull shape, sail area so I just tried to keep it to displacement. -sam
I was studying the numbers on aluminum and the fastest bombers in WW11 were Mosquitoes made of spruce. You convert to metrics but the imperial numbers will also show the difference. The tensile strength of aluminum is 30,000 psi but the tensile strength of bamboo is 28,000 psi. To pull a cubic foot of aluminum apart is 4,320,000 and it weighs 166 pounds but the same size block of bamboo parts at 4,032,000. The bamboo block only weighs 20 pounds. If you had enough bamboo blocks to weigh 166 pounds it would take over 32,000,000 pounds for the block to fail. Anywhere you can replace your interior with bamboo the lighter your boat. Bamboo lattice on doors. Wayne, of sailing Mangrove Charlie found marine bamboo. Wayne is Australian.
@@sailingwiththejamess Its one of the modern green renewable boat building options along with cork decking .... Look up the Incredible Wizards of wood article published on the Royal🇬🇧 chemistry society. Dynema rigging saves a huge amount of mass up where it counts most and also money ... Trim light...remember zagato... No memory foam mattresses.... heavy fabrics or fillings. For your extended canopy try the Basalt plastic honeycomb for canopy its light strong stable fire proof uv proof and a great insulator. They developed it in Belgium for the interiors and floors of highspeed trains. The Australian supplier of basalt products may have a link to them but i bet you could find a fabricator or DiY a top yourselves.. Its also nicer to work with than glass see SV lynx they are doing their hulls with it below the water line . All hatches could be built using basalt and flax... Greenboats and X boats as well as racing Carbon boats use it as engineered properly its lighter stronger and more resilient than straight Carbon ..its also cheaper and magnitudes greener. 🧙♂️ ruclips.net/video/sF8g2QDoiD8/видео.htmlsi=KNuzh6z4PMDRNz1x
Cheers Clive, I have already brought the foam for the cabin extension and have woven roving matting aswell. I'll need bi axial for my pod extensions and will get some basalt matting to try for that. Trimming the weight off is hard as stuff is so nice to have but well be doing another round of it over Christmas 🎄 when we go into a marina for a bit. -sam
Boat science with Sam! Good stuff learnt heaps. Thanks guys. Hmm I wonder if Pac star is over weight.. duck board underwater… covered in sea growth…. Resident crab… might have to give us a link to your diet I think 😂.
Boat Science with Sam! 🤩 We are trying our hardest to get the weight off! I hear you, so hard not to have stuff when you live onboard full time!!😆😀❤️ Sebastien is a great name for a crab! 🦀❤️😍 -Cait
So in other words Sam could talk the leg off an iron horse? lol . I am just wondering if some of the weight problem was with the initial build.. You know.. make it stronger by building it heavier? That would be very difficult to remove and really you don't want to go without a few luxuries do you? lol Thanks for the video.
We were wondering that, she does have 7tonne of aluminium in her and then the fitout on top of that. Things like the solid lifelines were not part of the original design, we LOVE them, but additional add ons would add some weight. The fit out inside is amazing and everything was done with weight consciousness in mind, all the bilge hatches and screens on doors are amazing We will keep everyone updated when we get hauled out when we do antifouling we will be able to see how much she weighs in the Slings 💜 💜💜 -Cait
15t is huge. is the panelling old school heavy stuff, melamine? So sweet seeing Sam wait for Cait to finish speaking @4:30, most guys just cut off, speak over girls. But he might have to lose 20kg to assist gross displacement. I think he lost both Cait & I @9:00. Dyneema rigging, much lighter, no corrosion. Latex mattresses, lighter, no mould. 48v wiring. Little things like, a 1kg bag of powdered milk weighs 1kg, makes 10lts, when needed. Of course you could get rid of one of the diesels, replace it with electric. Balance is so difficult to get right. I believe it good to get fellow cruisers, when guests onboard, to give an honest audit.
The monohull, Endless Summer was 24 tonnes 🤗 Would LOVE to go electric, but the engines work perfectly 🥰 and have low-ish hours so ripping them.out for electrics doesn't make too much sense right now - but we have done a ton of research into them and we are very interested! We have original rigging from 2005, it is something that needs to be done before we head overseas, we are looking at dyneema, and have been talking to riggers about the benefits of each (wire and dyneema). Haven't made a decision yet as we are still in the research phase but wile will be sharing the rigging getting done and what we decide to go with! 🥰 💜💜 -Cait
@@sailingwiththejamess Being a cat, only need to replace one (sell one, use $'s for one elec), best of both worlds vs mono, until elec tech gets better. Those that have done it pretty much use elec all the time, just use diesel to heat water, occasional charge (with high output alternator) if kids onboard, high use, emergencies. Riggers (any trade) will push easiest most profit for them. RUclips Rigging Doctor (unbiased) has vid on the subject, did his own boat, there's other examples out there (incl Wharram Catamarans). Value for $'s it's worth trying, if you still have the boat in 5+ years & don't like it, go back to the weight of steel.
I am very keen to try synthetic but you are right. Every time I speak to a rigger they don't recommend it. I have watched alot of the rigging doctors videos but am struggling to find someone locally that will support it. I havnt given up but need to change the rigging soon soo.. -sam
@@sailingwiththejamess IMO, even riggers over engineer, think it. Those huge billboard signs out on flat plain highways do ok with just footings. Huge single pole masts with wind turbines, communications, on rural properties, just 3x4mm strands supporting them. Truckers hold down huge awkward high loads, windage, turns, heavy braking, etc, with ratchet straps (winch). If it weren't for flat straps making a flapping racket in the wind, be worth a shot, even just in emergency if a cable snapped. Replace the straps with dyneema, using stainless steel ratchets (like a winch) & tension meter for adjusting, vs all that multiple bulky looping etc they carry-on with for tensioning. You could double line for backup & still be less bulk, weight & cost, easy diy.
Dyneema is amazing stuff hey! We are looking into the possibility of dyneema, in comparison with traditional wire. There's pros and cons, weight being a positive but cost wise it is more expensive compared if we swap like for like. We are still in the Research phase for rigging, no solid plans as of yet but when we go head with replacing the rigging we will share what we do and the rigging process 💜💜 -Cait
Thank you Mark! Yes she has 7 tonne of aluminium in her build and then fit out on top. We are doing our best and keep everyone updated when we get hauled to see what she weighs in the Slings! 💜💜 -Cait
Excellent video. You definitely need crew. I think you could save more weight by adding the other points in another video 😂. Also I'm available for crew I'm light weight.
Thank you Lockie! Good to know for crewing! 😁😁 She is slowly getting there with weight, it's been good to see her respond in relation to weight taken off! -Cait
Take everything off and check the water line. That is the only way to see if it is possible to achieve design weight. Do you know what launch weight was?
Would be great to do, but easier to say than do unfortunately. To move off and get everything off would be a great undertaking, but definitely a good idea and would give us a really good idea of her weight! We don't know what her launch weight was, we have her design papers and the papers used when she was built. Cruising weight is supposed to be 15tonne, our aim is to do the best we can 🤗🤍 💜💜 -Cait
Boats get heavier. Fastest they ever go is when they are designed second fastest is when they are launched. A rule of thumb is to take everything off that you haven’t used in one year. Good luck.
Thank you!! In a month or so we are going to be re-going through the whole boat and looking at what what is needed/used and what isn't 🤗 Good to see new faces on our channel! Hope to see you again! 💜 -Cait
Is see expanded foam insulation ,is it possible that its not the closed cell type and its a tually retaining moisture and causing or adding the extra 2 tons of weight
Mmmm, interesting theory. I don't believe it is the closed cell type. The parts of the foam that we can access is not waterlogged and the foam does not go much below the waterline. I don't believe it is water logged but I'll take a sample out of the bow to make sure. Sam
So stop yakking and get on with it, maybe Sam needs to lose a bit😲!!!! Maybe the design of the space between bridge deck and waterline is also not correct. Designers are not perfect. Especially as she is a big boat. Great episode family, let's go Sailing. Please.🇦🇺😉
We find it helpful when other cruisers share their knowledge, the hope is we are able to help other cruisers and sailors with what we know💜 She's a Lock Crowther design, a legend Australian Boat designer ✨️ It is good to see her respond in correspondence to weight being taken off, with waterline, handling, and speed ⛵️💨 Good to see her sailing at better speeds 💪 -Cait
Hello!! Another alloy crowther! 🤩 Yes would love to! ❤️ Whereabouts are you located? Instagram - Sailing with the James's Facebook - Sailing with the James's
Thank you for helping keep our boat afloat. See the 👍 button, please consider pressing it as you would be helping us out more than you know.
We hope to see you again next week ❤
Great video. Very interesting information.
Thank you!! So happy to heat people are enjoying it ❤️
-Cait
very informative video. Thank you
Thank you 💙 😊 💓
Thats good if its honeycomb, usually owner builders tent to chronically overbuild everything and on a big boat it adds up very quickly
Well you may still be right as we have stripped the boat and are still slightly over design weight.
-sam
Sailing science, I feel like I missed the first semester, but your lesson was very interesting. There’s a lot more to think about than catching an afternoon breeze on a Sunfish!
Sailing Science 😍
She is getting there with her weight 💪 She's been responding positively to lightening her up, with the way she handles and speed. When we were down South near Fraser Island we brought everything out if the back hatches to see what we had onboard and go through everything. The first sail we ever did we only went over 4 knots, we are now hitting 8s, 9s, 10s, 11s, & 12s. 9 seems to be the magic number and when she breaks suctions from the water 😃
-Cait
yep another good one thanks! yous should do a video on how to sail a cat compared with a mono. some things you said i didnt realise were different
Thank you!
Will talk to Sam about it! Would be an interesting video as we have experience with both. There's pros to each one 👍🤗
-Cait
Useful info, thanks for explaining that.
No worries at all! 💙💙
-Cait
A trip around the world would be awesome to watch, so I hope you're able to slim down and get fit.
Thank you, Frank! It's been amazing to see the difference as the weight goes off. We are working on slimming down and looking forward to sailing around the world on her 💙💙 She's proving to be a really great boat 🥰
-Cait
@@sailingwiththejamess😳😂😉 🙄 .... the boat i hope or hes getting personal and Charlie doesnt count or her stuffed toys.
Hahaha well I for one could do with sliming down and getting fit so I guess the comment works both ways lol
-sam
@@sailingwiththejamess
Working on human powered machines teaches you where the hardest wt is.😉🤞🏼👍🏼😎
Hahaha yes I would have to agree with that
-sam
Cant wait to see your diet, everything about reducing weight will improve performance and increase the lifespan of all thats important. FYI it is said that Capt Cook averaged 4 knots on his global voyages in Endevour... that was in 1770's.
Hope we go faster than 4 around the globe! Very impressed to Cooks navigation skills especially along the Queensland coast until Cooktown!
We've been working hard at reducing weight, we are looking forward to splashing and seeing how she goes!
-Cait
@@sailingwiththejamess I have been rebuilding a M&W32sloop for long distance voyaging and been concentrating on strenght and weight. One factor I've been thinking of is to add a R/O watermaker to my build to reduce the weight of carrying excess water, expensive yes. Worth the effort, I don't know. Would that be on your plans, 1000litres equals 1 tonne.
@@rickpyne We've got a Schenker watermaker onboard, its been really useful and love the ability to make water while out at sea and it will be very useful when in remote areas. We've been working on Emma's diet trying to get her to design cruising weight, unfortunately the yard we are in doesnt have a scale so we didnt get a reading when hauled out, it will be very interesting to one day we will be hauled out with a scale and get the new weight of what she is!
-Cait
Very interesting and informative I follow Ruby Rose Wynn's etc and 4 knots wouldn't go down well unless it was blowing 8 knots. Good luck with the diet 😂
Thank you!! Yes Ruby Rose is gorgeous!
Half wind strength would be amazing! It's been amazing to see her respond positively to the weight coming off and being able to feel and see the difference in her 💪 9 seems to be a nice sweetspot where she breaks suctions and glides 🙌
💜💜
-Cait
All those years on gray boats is paying off
What's a Gray boat?
Sam
It’s like a grey boat
Hahaha fair enough.
Great videos guys, a vary interesting boat! Seems be be a lot of timber and I assume a lot of ply in the fit out why adds weight very fast. Are you looking at replacing some of the timber with some of the new foam sandwich type materials
Hey Paul,
The timber is a laminate on a honey comb core. The trim may weigh a bit but I haven't been gaim to take it off and check just yet.
-sam
Really really interesting guys.Thank you for making this video, ive learned a lot from this.
Thank you! We hope to help others as well by making videos! Whatever we learn we will share! So happy to see you back every week, greatly appreciated 💜💜
-Cait
Hey mate you didn't talk about the wetted surface area and the resistance that has in the water.
Yeah sorry it got super wordy and if I talk about wetted surface area then that leads into hull shape, sail area so I just tried to keep it to displacement.
-sam
I was studying the numbers on aluminum and the fastest bombers in WW11 were Mosquitoes made of spruce. You convert to metrics but the imperial numbers will also show the difference. The tensile strength of aluminum is 30,000 psi but the tensile strength of bamboo is 28,000 psi. To pull a cubic foot of aluminum apart is 4,320,000 and it weighs 166 pounds but the same size block of bamboo parts at 4,032,000. The bamboo block only weighs 20 pounds. If you had enough bamboo blocks to weigh 166 pounds it would take over 32,000,000 pounds for the block to fail. Anywhere you can replace your interior with bamboo the lighter your boat. Bamboo lattice on doors. Wayne, of sailing Mangrove Charlie found marine bamboo. Wayne is Australian.
We will give Wayne of sailing Mangrove Charlie a look up! Super interesting to know of bamboo, will do some reading on it, thank you!
💜💜
-Cait
@@sailingwiththejamess
Its one of the modern green renewable boat building options along with cork decking ....
Look up the Incredible Wizards of wood article published on the Royal🇬🇧 chemistry society.
Dynema rigging saves a huge amount of mass up where it counts most and also money ...
Trim light...remember zagato... No memory foam mattresses.... heavy fabrics or fillings.
For your extended canopy try the Basalt plastic honeycomb for canopy its light strong stable fire proof uv proof and a great insulator.
They developed it in Belgium for the interiors and floors of highspeed trains. The Australian supplier of basalt products may have a link to them but i bet you could find a fabricator or DiY a top yourselves..
Its also nicer to work with than glass see SV lynx they are doing their hulls with it below the water line .
All hatches could be built using basalt and flax... Greenboats and X boats as well as racing Carbon boats use it as engineered properly its lighter stronger and more resilient than straight Carbon ..its also cheaper and magnitudes greener. 🧙♂️
ruclips.net/video/sF8g2QDoiD8/видео.htmlsi=KNuzh6z4PMDRNz1x
Cheers Clive, I have already brought the foam for the cabin extension and have woven roving matting aswell. I'll need bi axial for my pod extensions and will get some basalt matting to try for that. Trimming the weight off is hard as stuff is so nice to have but well be doing another round of it over Christmas 🎄 when we go into a marina for a bit.
-sam
Boat science with Sam! Good stuff learnt heaps. Thanks guys.
Hmm I wonder if Pac star is over weight.. duck board underwater… covered in sea growth…. Resident crab… might have to give us a link to your diet I think 😂.
Boat Science with Sam! 🤩 We are trying our hardest to get the weight off! I hear you, so hard not to have stuff when you live onboard full time!!😆😀❤️
Sebastien is a great name for a crab! 🦀❤️😍
-Cait
So in other words Sam could talk the leg off an iron horse? lol . I am just wondering if some of the weight problem was with the initial build.. You know.. make it stronger by building it heavier? That would be very difficult to remove and really you don't want to go without a few luxuries do you? lol Thanks for the video.
We were wondering that, she does have 7tonne of aluminium in her and then the fitout on top of that. Things like the solid lifelines were not part of the original design, we LOVE them, but additional add ons would add some weight. The fit out inside is amazing and everything was done with weight consciousness in mind, all the bilge hatches and screens on doors are amazing
We will keep everyone updated when we get hauled out when we do antifouling we will be able to see how much she weighs in the Slings 💜
💜💜
-Cait
15t is huge. is the panelling old school heavy stuff, melamine? So sweet seeing Sam wait for Cait to finish speaking @4:30, most guys just cut off, speak over girls. But he might have to lose 20kg to assist gross displacement. I think he lost both Cait & I @9:00.
Dyneema rigging, much lighter, no corrosion. Latex mattresses, lighter, no mould. 48v wiring. Little things like, a 1kg bag of powdered milk weighs 1kg, makes 10lts, when needed. Of course you could get rid of one of the diesels, replace it with electric.
Balance is so difficult to get right. I believe it good to get fellow cruisers, when guests onboard, to give an honest audit.
The monohull, Endless Summer was 24 tonnes 🤗
Would LOVE to go electric, but the engines work perfectly 🥰 and have low-ish hours so ripping them.out for electrics doesn't make too much sense right now - but we have done a ton of research into them and we are very interested!
We have original rigging from 2005, it is something that needs to be done before we head overseas, we are looking at dyneema, and have been talking to riggers about the benefits of each (wire and dyneema).
Haven't made a decision yet as we are still in the research phase but wile will be sharing the rigging getting done and what we decide to go with! 🥰
💜💜
-Cait
@@sailingwiththejamess Being a cat, only need to replace one (sell one, use $'s for one elec), best of both worlds vs mono, until elec tech gets better.
Those that have done it pretty much use elec all the time, just use diesel to heat water, occasional charge (with high output alternator) if kids onboard, high use, emergencies.
Riggers (any trade) will push easiest most profit for them. RUclips Rigging Doctor (unbiased) has vid on the subject, did his own boat, there's other examples out there (incl Wharram Catamarans).
Value for $'s it's worth trying, if you still have the boat in 5+ years & don't like it, go back to the weight of steel.
I am very keen to try synthetic but you are right. Every time I speak to a rigger they don't recommend it. I have watched alot of the rigging doctors videos but am struggling to find someone locally that will support it. I havnt given up but need to change the rigging soon soo..
-sam
@@sailingwiththejamess IMO, even riggers over engineer, think it.
Those huge billboard signs out on flat plain highways do ok with just footings.
Huge single pole masts with wind turbines, communications, on rural properties, just 3x4mm strands supporting them.
Truckers hold down huge awkward high loads, windage, turns, heavy braking, etc, with ratchet straps (winch).
If it weren't for flat straps making a flapping racket in the wind, be worth a shot, even just in emergency if a cable snapped.
Replace the straps with dyneema, using stainless steel ratchets (like a winch) & tension meter for adjusting, vs all that multiple bulky looping etc they carry-on with for tensioning.
You could double line for backup & still be less bulk, weight & cost, easy diy.
Dyneema is amazing stuff hey!
We are looking into the possibility of dyneema, in comparison with traditional wire. There's pros and cons, weight being a positive but cost wise it is more expensive compared if we swap like for like.
We are still in the Research phase for rigging, no solid plans as of yet but when we go head with replacing the rigging we will share what we do and the rigging process 💜💜
-Cait
Any chance you might be getting a new crew member in maybe under 9 months ?
We will explain in a few weeks 😆
But no, not at this point💜
💜💜
-Cait
Unfortunately when building a catamaran its easy to build over weight but really hard to take weight off without extreme measure's good luck👍
Thank you Mark! Yes she has 7 tonne of aluminium in her build and then fit out on top. We are doing our best and keep everyone updated when we get hauled to see what she weighs in the Slings!
💜💜
-Cait
Excellent video. You definitely need crew. I think you could save more weight by adding the other points in another video 😂. Also I'm available for crew I'm light weight.
Thank you Lockie! Good to know for crewing! 😁😁
She is slowly getting there with weight, it's been good to see her respond in relation to weight taken off!
-Cait
Take everything off and check the water line. That is the only way to see if it is possible to achieve design weight.
Do you know what launch weight was?
Would be great to do, but easier to say than do unfortunately. To move off and get everything off would be a great undertaking, but definitely a good idea and would give us a really good idea of her weight!
We don't know what her launch weight was, we have her design papers and the papers used when she was built. Cruising weight is supposed to be 15tonne, our aim is to do the best we can 🤗🤍
💜💜
-Cait
Boats get heavier. Fastest they ever go is when they are designed second fastest is when they are launched. A rule of thumb is to take everything off that you haven’t used in one year. Good luck.
Thank you!! In a month or so we are going to be re-going through the whole boat and looking at what what is needed/used and what isn't 🤗
Good to see new faces on our channel! Hope to see you again! 💜
-Cait
Is see expanded foam insulation ,is it possible that its not the closed cell type and its a tually retaining moisture and causing or adding the extra 2 tons of weight
Mmmm, interesting theory. I don't believe it is the closed cell type. The parts of the foam that we can access is not waterlogged and the foam does not go much below the waterline. I don't believe it is water logged but I'll take a sample out of the bow to make sure.
Sam
So stop yakking and get on with it, maybe Sam needs to lose a bit😲!!!! Maybe the design of the space between bridge deck and waterline is also not correct. Designers are not perfect. Especially as she is a big boat. Great episode family, let's go Sailing. Please.🇦🇺😉
We find it helpful when other cruisers share their knowledge, the hope is we are able to help other cruisers and sailors with what we know💜
She's a Lock Crowther design, a legend Australian Boat designer ✨️ It is good to see her respond in correspondence to weight being taken off, with waterline, handling, and speed ⛵️💨 Good to see her sailing at better speeds 💪
-Cait
@@sailingwiththejamess I think she's a True Blue Aussie Catamaran, she's got courage and strength built into her Bones. 😁😉🇦🇺
She's Definitely Aussie 🇦🇺 💙💙💙 and we love it - especially the signature crowther flare in the bows 😍
-Cait
Hey - we have aluminium crowther 54 - would love to have a chat!
Hello!! Another alloy crowther! 🤩 Yes would love to! ❤️ Whereabouts are you located?
Instagram - Sailing with the James's
Facebook - Sailing with the James's
Pittwater/Hawkesbury area@@sailingwiththejamess
Oh cool we brought our last boat from pitwater. We would love to talk, message us on instagram or Facebook
Sam