Thunderstorms that wreck boats twice in Montenegro - @AwanuiNZ Ep 66
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- Опубликовано: 6 сен 2024
- Two storms come through which we do well in but others not so well. Couple of boats wrecked in bays and much damage in Marinas. join Mark and Fiona on their epic cruise from Turkey to New Zealand aboard Nordhavn’s 1st N51 #boating #cruise #adventure #boat #nordhavn #nz #sailing #yacht #yachting #greece
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put a spacer behind that strainer so that it is more accesible
Yip definately going to
with that rendition of "happy Birthday" i'd reccomend entering NZ got talent 🤣
Don’t think so!
@@AwanuiNZмы не будем запускать большую ракету, если вы будете послушные как Фиона.
😂
Keep living the dream guys, living it along with you.
How cool…we will
Win, checking and cleaning the sea strainer.
Fail on the installation of the strainer. Someone wasn’t thinking about servicing when they installed that. Hope it doesn’t need to be done too often, or that you re-install it in a better location.
I find the “ what’s under the boat” clips interesting, and those caves were something else.
Thanks so much
I love under the boat.
Under water drones are great.
They go 30 mtrs down
@@AwanuiNZMark theres a guy that cant afford a under water dron and he puts his gopro on his fishing rod and drop it to sit on the bottom
@@MarketingStrategies28 I’ve not looked at them before, but I see that underwater drones seem to run from about $700🇨🇦 to $4,000🇨🇦 and the sky’s the limit really.
@@bobuncle8704 FiFish v6
Has many front attachments
Am getting the idea that thunderstorms are pretty common in that area or am I mistaken ? Definitely something to take into consideration for us when we get there in September.
As for the snubber in a thunderstorm..........don't take it off. The whole reason for the snubber is to take away the load and stress on the windlass and in such heavy gusts those stresses on that windlass will be immense. Also, the snubber lowers the angle of the chain with the seabed, which means it increases your scope and that is always good in a storm. A storm will push the boat backwards, increasing the angle of the chain with the seabed and when the boat also starts pitching up and down (and you don't have enough chain out) you basically start to wiggle the anchor out of the seabed and you will start to drag.
Best way to avoid dragging of your anchor is to understand why it happens. A dragging anchor means the forces on the boat (by the wind and current) are more than what the anchor and chain can counteract. Many people only talk about the type of anchor, claiming theirs is the best, demonstrating clearly they don't understand anchoring at all. Of course the type of anchor is important, since certain anchors hold better in certain types of sea beds, but ultimately it is all about keep the anchor in the seabed and that you do by keeping the shank on the seabed.
Any anchor will lose all holding power as soon as the shank is raised to 25 degrees (or more) off the seabed, you will start to drag, no doubt about it.
However, it will already have lost about 30 % of its holding power as soon as the shank gets to an angle of 5 degrees. I.o.w. you have to keep the shank on the seabed at all times in order to get maximum holding power of your anchor. Keeping the shank on the seabed is the job of the anchor chain. Once you understand why dragging happens the remedy is very simple and from that moment on you will sleep much more quiet.
The anchor and chain have to withstand the forces the wind can put on the boat, those forces can be calculated. Once you know those forces you can calculate how much chain you need to put out.
So if you see a thunderstorm building you know you can expect 40 - 50 kts of wind gusting to perhaps over 60 kts. That means around 200 N/m2 of boat surface (the part that is in the wind). We have 18 m2 frontal surface, which means 3600 N at 10 Bft. Now I know that, in order to avoid dragging, I need to have at least 3600 N (or 360 kg) of chain in the water. With 4 kg per meter of chain (13 mm) I need at least 90 mtr of chain to provide that 360 kg. However, I need to keep the shank on the seabed, so I need to change the direction of the force from angled up to straight back. That I will do with another 10 mtr of chain which will lie behind the anchor. When the wind now starts to blow it may raise the 360 kg of chain of the seabed, but the additional 10 mtr (is 40 kg or 400 N in my case with a 13 mm chain) will remain on the seabed, making sure the shank of the anchor remains horizontal, (thus giving the anchor maximum holding power). So now I am already at 100 mtr of chain.
This is all when there are no waves, but since there will be waves the angle of the chain with the seabed will continuously change, so the higher the waves the more chain I will put in the water to counteract that pulling motion on the chain.
What does it mean in daily operations ? We will drop at least 70 to 80 mtrs as standard in any anchorage with good weather. That will give us a lot of peace of mind when sleeping, we know we are not going anywhere. In fact, we will pivot around the chain instead of around the anchor.
When a storm is approaching we will add more chain, dropping 100 - 120 mtr in the water and keeping 20 mtr as spare. As long as I can keep the shank on the seabed our boat will not drag. Our problem is more the other boats, that don't know how to anchor, and they start dragging in our direction. Especially the charter boats are a complete nightmare.😀We have been in anchorages with 40 or more boats, us being the furthest out. Wind picked up to 20 kts and half the anchorage started dragging (near Petriti on Corfu).
What to do if you start dragging ? If you have the space around you and have the chain...........drop as many meters of chain as you can. It will bring the shank of the anchor back to the sea bed and the anchor will have a chance to reset. That may take a bit, but ultimately it should reset. If you don't have the space or don't have the extra meters of chain, then indeed using the engine is the solution. If your chain is too light you may want to think about changing to a heavier chain. We had 70 mtrs of 10 mm chain, but went to a 140 mtr of 13 mm chain, gives us 1.7 kg per meter extra in weight and it is much stronger. In all we added about 400 kg of chain, which also keeps the bow down as ballast.
Based on the above you will understand that we don't like to anchor in close anchorages with a lot of other boats. We prefer to go further out so we have the space to drop more chain. If we can anchor in shallow waters that is great, since it greatly reduces the angle of the chain with the seabed, reducing the risk of dragging even further.
A not so nice part about thunderstorms is something we found out yesterday. When we left the boat it was a clear blue sky, so all our solar panels were up and running, also the ones that we can fold down. While we were in central Istra all of a sudden a thunderstorm started building out of nowhere and that went quickly. We were about 1.5 hours away from the boat and when we came back to the boat, the boat itself was fine, nothing had happened, but one of the extendable solar panels had been smashed to pieces. It had been ripped out of its hold down bars, which means we had a gust of over 50 kts. So we are now less 1 solar panel, have to buy a new one. Expensive lesson and means from now on we will tie the foldable panels down when we leave the boat.
You said you will have your panels on the bimini, so just make sure that bimini is able to withstand a 60 kt gust, otherwise the whole bimini will be ripped clean off the boat. And that is the last thing you will want to have happening.
We will be looking forward seeing your first harpoon kill. Lobster perhaps ?
Hey what a great and comprehensive post, thanks so much. My thinking has always been to be able to get up and running quickly if we had to move either to avoid boats coming onto us or to get away if we are dragging. Standard practice for us is to put the snubber on but if we anticipate having to move we take it off to make a departure less complicated. I suspect we dragged because we had only 80mtrs out and our chain is 10mm…a couple of boaties have suggested that our chain looks a bit light for the size boat. We have 100 metres. I am thinking of getting another 5m at least for when we inevitably reach deeper anchorages. So much to learn and a fresh lobster would certainly help!
@@AwanuiNZ the weight of our boats is roughly identical and so is the frontal surface. Therefore the forces of the wind on the hull are also roughly the same. We have about 18 m2 frontal surface (waterline to top of fly bridge) and multiplied by the force of a strong wind that will lead to very high forces.
10 mm on our boat was nice on rivers, calm seas, but since we are in an area where the weather can go from one extreme to another we decided to increase everything. We never encountered 10 to 12 Bft on inland waters, but here in the Med we have been there quite a few times.
10 Bft puts 3600 N on the chain. 100 mtr of 10 mm chain will only provide 2700 N in counter force, so you are still missing 900 N. That means that the shank of the anchor will be lifted of the seabed in case you get wind gusts of 50 - 60 kts and as a result you will start to drag. To counteract that you would need to add at least 50 mtr of 10 mm chain and it would have to be in the water, plus the water needs to be shallow.
Of course I did not get this 'knowledge' through my own testing of anchors. I have the book of Joachim Schult: Das ist motorboot fahren. He explains in great (mathematical) detail the workings of anchoring (amongst many other subjects).
There is an English version of this book, can find it here:
www.amazon.de/-/en/Joachim-Schult/dp/3768802892
There are more articles on anchoring (even mathematical equations) and based on that we made the changes to our equipment. All of this after we had dragged for the first time in a sudden storm near Corfu (in that same anchorage where you were). Since that time we have not dragged anymore and we have been in very heavy storms.
Btw, also currents can put quite a bit of force on the hull. Imagine that you now have wind and current working against you and you don't have a lot of room to drop a lot of chain. In that case you will need a heavy chain.
Can highly recommend diving into the theoretical (and mathematical) part of anchoring, after all it is more or less what keeps your boat (and you) safe.
Great video Mark what a thunderstorm looking forward to your next video.
Thanks, out very soon
That is crazy the way they installed that water maker where you have to do so much work for simple maintenance. I would call them and say, "What the heck, guys?" Y'all always meet new people where ever you go. The storms looked really neat. I love storms, I just don't know if I would love storms on a yacht. I hope the solar panels are being installed soon. Those can really be useful to help lessen the need for the generator. If you add a few more and possible increase the size of your house battery bank, you could be independent of the generator for a few days. I've been binge watching your playlist for several days and I finally caught up. Now that I'm out of videos to watch, I sad. I hope y'all are having a safe and fun time. Jim
Hi Jim. Thanks for your feedback and thanks for the support in watching all the videos…that is a lot of time. Next one out very soon. Solar installation starting next week. Getting gear over here is not easy. I love storms too, nature at its very best
Yip , best to use sockets to undo clips if you can.Boats are a great learning curve,welldone.
Much easier
I had to laugh at the strainer instillation. Some of these people must have their brain turned off when putting things on boats.
When a young fella I worked on a trawler that had solid piping for the main winch hydraulics from the pump on the engine to the winch on the foredeck and they never put any swivel fittings in the line. We had a leak in a fitting and had to take it to pieces from winch right back to the pump to replace a fitting as big as your thumb. Took us nearly all day to do a five minute job 😂
Go figure eh?
Lovely video
Great people
Keep them coming please.
Next one out soon
A delightful video. Your guests were immensely helpful -- he managed to untangle the dinghy line from your prop and get the filter our of the raw water intake for the water maker. Make him an admiral ASAP. The comically bad placement of the filter reminds me of my center console -- I have been told four bolts are loose in the steering wheel but the entire head compartment wall will have to be removed to get at them. Several hours of work to spend 20 seconds tightening four bolts. Thunder storms usually don't last more than 10 or 15 minutes but they can be scary minutes if it starts blowing 40 knots.
Wait for the next e-inside I really put him to work!
I am sure you will be able to modify the strainer access for the future. enjoyable vid as usual thanks guys
Hope so!
Thanks for the episode guys, nothing worse than ridiculous installations making a 10 minute job into a couple of hours.
You got it
Wow, how did the engineer miss that filter placement. Check with the boat yard to see if they have a fix for that, if not look to move it yourself. This is fine when achored up but if this became a problem when underway, WAY out in the Sea / Ocean, under rough conditions, that then is a major issue. Thanks for the video sir.
I will fix for sure. Work was conducted by third party under our stewardship not the yard…Will watch much closer next time.
Again, a nice video... And what a relief it must be to be on a nordhavn. The boat seems sturdy enough to ride off the storm, as opposed so to some of the smaller sailing boats!
Love how you filmed the cleaning of the water maker - again one of these daily chores that makes up the life on a boat. Very interesting installation though.... Thank you for sharing - it is half an hour of holiday for us "screen-sailors"....
Thanks so much for the feedback…we enjoy making each episode
What a daft design for the water filter. Good though, as you can feedback to Nordhaven. Great video 🥃🏴
Not Nordhavn it was a third party contracted by us.
Awanui NZ looks beutiful at anchor.
Thanks so much
the joys of boating is a rough night rocking and rolling ? , not looking forward to a passage with a following sea
Yip
Excellent, as usual. I'm sure Nordhavn will remedy the position of the sea strainer in later boats, just the joy of hull#1, basically just teething problems, but annoying for you. Really enjoyed the thunderstorms, something we don't get much of down here in Tassie, very low humidity. Fair winds.😊
Third party installation after Nordhavn. Totally confident that Nordhavn would not install like that.
@@AwanuiNZ , oops, just another "seniors moment", my bad.😊
Your spoiling us Mark with two videos in one week. I thought the often mentioned water maker must have been fitted by third party after the build was finished. Nordhavn just wouldn't put out that terrible workmanship.
Correct…another episode almost ready. Really trying to catch up so everyone is with us
WTH? How did nobody at Nordhaven stop to think that was stupid?
Was not installed by Nordhavn as part of build. We had installed in Bodrum by supplier…I need to watch more closely in future.
Just like an aircraft, a good dump of fresh water gives the exterior a good clean and flush without the elbow grease.
Yip
Cracking Episode!
Cool ta
Super vid, thank you.
No worries our pleasure
Not a very maintenance-minded way of installing that sea water filter you tried getting out around the six-minute point! Doesn't appear much thought went into how it was supposed to be serviced after being installed.
100% correct…pretty crap…installed by third party after boat completion….next time I will watch much more carefully
@@AwanuiNZ, reminds me of the days of doing an oil change on my old ‘79 Ford Escort. You just about needed a triple-jointed elbow to get the oil filter off that stupid car!
@matthewb9824 yip and does not get easier the older you get!
One would think in the year of 2024 that people would have learned how to install maintainable fittings in a boat of this type, but I'm gonna guess and say that's never been the point
😆
@@AwanuiNZ Next Time? Thinking about a new boat already? LOL.
What would piss me off the most is the person who installed the filter absolutely knew it would be a problem but chose to do it anyway. That guy should be reassigned to sweeping floors.
Pretty slack eh?
Hi, we're really enjoying your adventures. I was thinking that your Anchor looks a bit small for the size of your vessel. Cheers
45Kg…meets the spec so assume it will do the job
@AwanuiNZ fair enough, looks smaller on tv. Thanks for the reply and safe travels.
You should have a white running light on the tender at night. Its probably stored under seat. Just for future endeavors.
Thank you
Mark I see the tender lifting crane has movement when not in use , that continual movement in weather might wear parts out . Can it be secured better so no movement at all ?
Mmm I checked it does not seem to be moving? Where was that in the video?
I’ve wondered why the throttle control on the dingy is so far away from the operator?
You certainly need to lean forward
As a Diver of 30 years plus, I am not a great fan of spearfishing
Not sure I am either…Great Whites in the Med!
That was a disgraceful fitting of the watermaker inlet filter. It would put me off buying from that company, if that is the standard of their work. Just plain stupid, and you will have the same problem for ever, unless you move it. Pathetic. (satire)
Don’t worry I will move it. Was fitted by a third party company after the build,was,complete contracted by us.
boat owner with absolute zero mechanical or common sense skill should have a full time marine technician on board
Yeah if only
Привет из России с любовью!
Thanks so much