My My, What a BowTFull Nose You Have My Dear!

My My, What a BowTFull Nose You Have My Dear!

Most of the visible changes this week of July 23-27, 2018 took place up at the bow though there was also lots of work going on inside as more of the thick hull plates on the bottom of the hull (currently the top in its upside down position) were pulled tight against the framework and tacked in welded in place.  Weather here cooled off nicely at the beginning of the week and temps are down to the mid 30’s during the day and dipping into the high 20’s a few nights so makes for very pleasant weather for our early morning workouts and sundowners out on the porch and pool at our apartment.  But things continue to go hot and heavy with Team Möbius as Project Goldilocks continues to make great progress so let’s get to showing you that now.

IMG_20180724_132949With the title providing some clues can you guess what this is??

IMG_20180725_101444Does this help?

PGL sketch 35How about this?

That’s right, this is Möbius’ nose cone!  Or at least that’s what we are calling it. 

Anchor Deck looking aftA few more clips from the Rhino model to bring this all into focus before I take you through the real thing.  This clip off the model looking at the front Port side.  Nose cone in blue.

Anchor Deck looking fwdHere is what it will look like when you are standing up on the anchor deck area.

You can see how the deck in this area is recessed and angled steeply as it goes forward to the nose cone which serves two purposes; a strong centered fair lead for the nylon snubber line to travel though from the Samson post out to the anchor chain and to provide a good drain for all the water and muck rinsed off the chain as the anchor comes aboard.

DJI_20180724_172436The nose cone started out as a 300mm/12” diameter cylinder of solid aluminium which was first bored out to an inner diameter of 120mm/5” and then machined to taper out to a diameter of about 150mm/6” at each end.

IMG_20180724_132949This created a very smooth curve on the inside a bit like the inside flared end of a trumpet with large radius blends around the outer ends to provide a very smooth surface for the nylon snubber line to bear against as it stretches in and out while we are on anchor. 

IMG_20180724_132943As you may recall from a previous post the snubber line acts as a shock absorber as the boat tugs against the anchor with wind and waves thanks to the stretchy characteristic of 3 strand nylon line. 

IMG_20180725_101502We spend the majority of our life aboard at anchor so this is a very important feature we use almost every day and night.  The snubber line also eliminates the rattle of the anchor chain in the bow roller as it is isolated from the boat by this length of nylon line.

My hand will give you a sense of scale.

IMG_20180725_101436Burak pulled some 2D templates off the 3D model which Uğur and the team used to trace the complex curves where the surrounding plates support the nose cone and it was soon tacked in place.

IMG_20180725_101508If you look closely (click to enlarge) you can see how the snubber line has a nice straight line through the middle of the nose cone to the Samson post it is tied off on.

IMG_20180725_140651Once everything is all lined up and tacked, Sezgin is called in to do the continuous welding


With all the welding finished on the inside this large collision bulkhead,,

IMG_20180726_102503 the Starboard hull plate can now be fitted.  The Port side has already been fully plated so there is no access to the inside to weld this Stbd plate so these rows of slots have been cut to expose the underlying flat bar like the one you can see here running parallel to the upper edge of the hull plate. 

IMG_20180726_134041The hull plate is checked for precise position and then tack welded through the slots.

IMG_20180727_102041A length of flat bar is tacked to along the upper edge of this first plate to keep that edge perfectly straight when the next 10mm hull plate is welded where they butt together.

IMG_20180727_125858The 10mm plate is soon all tacked in place and ready for the final 15mm / 5/8” thick “ice plate” is welded in place to complete the bow plating.

Wayne   Ugur checking bow plateWhat is this guy doing over on the Starboard side of the bow?  That upper 15mm plate wasn’t quite up tight against the underlying flat bars under those slots so Uğur and I where deciding how best to pull the plate in tight before it was welded.  A U shaped bridge made out of thick aluminium plate was welded to the 25mm Stem Bar up top and the 15mm plate below so that a hydraulic jack could push the bow plate the last few mm to be tight against the flat bar and it was soon tacked to stay there.

IMG_20180727_102155Meanwhile over on the middle section of the Port side Enver and Umit have been working on getting the 12mm plate carefully fitted in place and tacked to the inner framework. 

IMG_20180726_102850These thicker plates with their complex 3D curves require careful work to trim them to fit just right with no gaps where their edges butt together and their inner curved surfaces are laying tight against the frames.  All in a days work for talented and persistent Team Möbius. 

IMG_20180726_102734Next week the attention will shift to the Starboard side plating some of which you see here with their edges all nicely beveled in preparation for being welded together.

DJI_20180724_104333Mehmet is a true worker bee as he works non stop to clean up all the tack welds with wire wheels and rotary bits prior to Sezgin coming along and laying down the final welds which Mehmet then needs to thoroughly clean again for their final finish.

DJI_20180724_104236Throughout the week the humm and crackle of the MIG welder is our ever present background music as Sezgin welds and welds and welds.

IMG_20180727_204218Not to be outdone by the work of mere mortals, Mother Nature topped off our busy and productive week with flair and Christine and I had the perfect view from the balcony of our nearby 9th story apartment for the truly awemazing sight of the total eclipse creating this extremely rare blood moon.

And so another week has zipped by and here is the time lapse video summary for you to enjoy.

My My, What a BowTFull Nose You Have My Dear!

Hull of a Curve! Week of July 16-20, 2018

Once again the heat continues inside and outside of Naval Yachts this week.  As per the title most of the work was focused on giving Möbius her curvaceous shapes as the 3D curved hull plates you may recall seeing us receive in last Friday’s post were hoisted up onto the framework and tacked into place.  These thicker and heavier curved plates take much more time to get into position and tacked in place than the flatter and lighter plates previously installed but as you’ll see below most of the plates on what will be the Port/left side are now in position.  Show me don’t tell me right, so on with the show we go………..


First step with these thicker 12mm/1/2” and 15mm / 5/8” hull plates is to bevel all their edges to create the V grove where they butt up against each other and enable the welds to fully penetrate from each side.  These curly chips are from cutting all those bevels.


One of the great things about aluminium is how easily it can be worked with woodworking power tools so as you see Enver doing here, a router fitted with a 45 degree carbide cutter with a bearing follower is used to put an even chamfer around all the edges of each plate.  Other than the horrendous noise it works quickly and well.

DJI_20180719_095521As each plate is beveled the whole crew helps to flip it over and work on the next one down in the pile.  Those stripes let you see where the wheel rolling and hydraulic presses the bender uses to create these very complex curves.

IMG_20180717_103923They work through each plate in the pile and put the bevels on all their edges.


Once all the plates have been prepped it was time to put in a call to the preying mantis crane truck to lift each plate up onto the hull.

Hull plating thicknessJust before we jump into this week’s work on putting these 3D curved hull plates in place here again is view of the 3D model showing the different plate thicknesses.  The curved plates which are going into place this week are the green 12mm / 1/2” thick and the Cyan 15mm/ 5/8” bow plates.  Note also the “shark fin” Keel which protects and supports the propeller and shaft which also had more work done this week.

IMG_1151This is the 15mm “ice plating” that forms the first 5 meters of the hull back from the bow.

IMG_1155The super long reach of the crane makes short work of positioning this plate where they want it.

DJI_20180719_094852And then the crane comes back for the next one.

DJI_20180719_095000This is the 2nd plate back from the bow on the Port side and you can see just how complex the combination of the CNC cutting and the rolling/bending of the 3D curves has to be.


Moving forward on the Port side you can see the 3rd plate back from the bow being set temporarily in place.  If you refer back to the coloured 3D model above you can see there is a long tab where the framing for a future stabiliser sits and you can see Umit and Uğur fitting that tab into place on the bottom edge of this plate. 

You can also see that some lengths of 15mm plate have been tack welded along the entire lower plate’s edge to ensure it stays in just the right place and tight up against the stringers and frames while they tack the new plate’s edge.

DJI_20180719_111744Moving right along, here is the 2nd plate back from the bow being manoeuvred  in place with some short vertical bars tacked onto the horizontal stiffeners to keep it from slipping off the edge as they move the plate into position.

DJI_20180719_164237The bends in the plates seem to be matching up just right against the underlying curved framework.  You gotta love the accuracy that comes from 3D models and CNC cutting!

If you click to enlarge this and look very carefully where the plate edges touch the stringers you will see the little step in the stringers which allow for the transition from this 12mm thick plate to the 15mm thick ice bow plate that butts up against it.  This ensures that the outer hull surfaces are all flush and smooth and the welded transition is on the inside.


Time to move that 15mm bow plate into position.

DJI_20180720_110237Here you can see the scrap bit of plate with a hole in it is tacked to the plate to provide a place for the hook on the chain hoist to attach and let the plate slide all the way forward.  You will see this in action in the video below.


And here is that eXtremely thick ice plate in position and ready to be pulled tight against that massive 25mm thick Stem Bar and welded in place.

DJI_20180720_181315Looking straight up the Stem Bar where that ice plate meets up with the Stem Bar and the 10mm upper hull plate will give you a sense of how strong Möbius’ bow will be.

And now the fitting and tacking begins to pull all these thick curvy plates tightly up against the framework and tack them in place.

DJI_20180719_163918Moving over to the yet to be plated Starboard side you can see these new curved plates being tacked to the frames and stringers.

DJI_20180720_133828Looking aft along the Port side wtih all its 3rd row of plates in position now you can start to see Möbius’ sleek slippery curves starting to come into view now. 
DJI_20180720_110435Still lots of curved plates waiting for their turn next week as the process is repeated and the Starboard plates are lifted in place as the plating of the hull continues.

DJI_20180718_105634Taking the plate to even greater eXtremes here is the 50mm / 2” thick grounding plate which will soon be welded onto the bottom of the 25mm thick “shark fin” shaped Keel where the prop shaft extends out.

IMG_20180717_103909Work continued on that shark fin shaped Keel  and you can see Uğur welding in the 25mm vertical frames which, when covered with 12mm plate will create the geometric curved foil shape to maximise the smooth flow of water feeding the eXtremely big 1m OD four bladed CPP propeller.

IMG_20180716_181940And lest you think that we never see the light of day outside of the shipyard building, here is what else has been going on this week in the Antalya Free Zone.

This little fella went sliding by our front doors on Wednesday making its way to the launching ramp after a complete refit after it was flooded when originally launched after being built at a yard in Italy.

IMG_20180718_103403And remember this rendering of the new home of Naval Yachts that is being built 2 blocks over from where we are now?

IMG_20180718_103235Well this week all the steel columns were stood up onto their deep concrete footings.

IMG_20180718_103307The thick huge concrete shop floor will be poured over all this dirt in the next few weeks
IMG_20180718_103454Work on the concrete part of the building for the offices and workshops has also been moving along quickly.

If work stays on schedule we will be moving into this new building around November and this will be where the right side up hull of Möbius will be moved to be fitted out with all her systems, equipment and interiors.

So that’s the week that was July 16-20, 2018 and below is the summary video of the week as usual.

Our continued thanks to you for taking the time to join us and please add your questions and suggestions in the Comments field below.

My My, What a BowTFull Nose You Have My Dear!

I said FUEL tank not FOOL tank!!!

The heat wave continues both weather wise and Möbius progress wise this week and here is your summary of all that has gone on.  After cooling off slightly last weekend with daytime highs down in the mid to upper 30’s (90’s F) they climbed back up throughout the week and we were up to 41c/106f yesterday.  Suffice it to say that we are getting VERY good use out of the lovely big pool we have at our apartment and doesn’t take long to get well cooled.  As I sit and type this on Saturday (July 14, 2018) the forecast is for 40-41 high today so I’ll write this in between trips down to the pool if you don’t mind.

Fortunately there are shower facilities for everyone inside the Naval Yachts shipyard so most of the team is able to cool off and clean up at the end of a hot day which helps make it all quite workable and this is very typical weather for July and August here in Antalya so they are all quite used to it.  Undeterred by the weather everyone on Team Möbius just kept on going and more great progress was made throughout the week and just before I dive in with all the photos, if you check the daily count meter at the bottom of the blog you will notice that today is the 100th day since construction on the hull began.  We could not be more pleased with the progress and the results from this incredible team which Naval Yachts as surrounded us with.  Now, on with the show!

DJI_20180713_182419Let’s get the title’s fuelishness out of the way first with my way of showing you the beginning of building our Day Tank.  It is called a Day Tank because this is the tank which holds the daily diesel supply Mr. G (our Gardner 6LXB engine) needs when we are underway. 

Word of Warning; this fool will pop up again in the video at the end of this post!

As you’ve been seeing in previous posts, the rest of our tanks are all below the waterline and integrally built into the framework of the hull for added safety and keeping all that weight down as low as possible.  These lower integral tanks hold about 14,000 litres/3700 USGals and each day we will fill up the Day Tank by pulling diesel from those big tanks.  The Day Tank holds about 500L/132 USG and we anticipate our maximum fuel burn rate to be less than 20L/5.3USG per hour so this tank should have enough fuel for more than a 24 hour and 250nm day on passage.

IMG_20180712_103947This was the very beginning of prepping the plate for the Day Tank and other new parts earlier this week.

IMG_20180703_170811The most visible change on the hull this week was the addition of the final aft section of  the eXtreme Keel Bar.  This is the Before shot of the aft end of the hull…..

IMG_20180713_105001….. and this is the after shot with the Keel Bar set in place.

Enver and Umit are making sure this section of the Keel Bar is precisely positioned just right prior to tacking it in place.

Sezgin, in blue, is of course welding non stop all day every day trying to keep up as the rest of the team add more and more parts for him to weld.

IMG_20180713_104950You’ve seen the forward sections of this 25mm thick Keel Bar being fitted in previous weeks including the truly eXtreme bow section where the Keel Bar curves through 90 degrees to go all the way up to deck level and form the Stem Bar and sealed collision crash bulkhead. 

This aft section now completes the placing of the Keel Bar.

Aft Keel Bar clip

This quick clip of the model will help put this into perspective for you.  The dark green is the beefy Keel Bar you see in the photo above. 

If you are wondering, that section in the middle of the Keel Bar and down by Enver’s knee above, with the thin vertical connectors are just temporary to keep everything aligned.  That gap is where a large thick walled AL tube will be welded in place to house the propeller log tube and shaft for the Nogva CPP prop system.


Standing inside the Workshop and pointing the camera forwards along the side of the Keel Bar you can see where the prop tube fits once those spacers are cut out. 

This perspective also clearly shows how the Keel Bar fits into the slots cut into the transverse frame #20 and where that prop shaft tube will pass through. 

All this will be fully welded up once we have all the other parts of the hull framing and hull plates in place to create an extremely robust aft end.


Moving the camera just forward of Frame #20 you can see how the rest of this aft section of the Keel Bar continues forward and is captured and precisely positioned by the slots in Frames #19 in the foreground, 18 and 17 which is also the WT Bulkhead between the Engine Room/Workshop area and the Guest Cabin aka Christine’s Office.


Turning around 180 and looking aft at Frame #20 again this shot might help complete your visualization of this area and how the framing all comes together. 

If you look closely (click to enlarge) on either side of the center Keel Bar those sloping lengths of 25mm AL form the beds for mounting the main engine and CPP servo gearbox.  Thicker than needed in the eXtreme to fully support the engine and gearbox but we have supersized these engine beds because one of the ways to reduce vibration and noise is with mass, and these are eXtremely massive because we want an eXtremely quite boat.

Interior LayoutWhile I am inside let me show you around some of the different interior spaces on Möbius so you can see how those look from the inside right now.  Be sure to check out the video at the end for an even better tour of the inside areas.

It is a bit of a challenge to visualise these interior spaces at this stage of construction so I’ve done this quick and dirty clip of the upside down hull all stripped away to show the main spaces.


This is looking aft through the door into the Workshop/Engine Room we just left and now standing inside the Guest Cabin/Christine’s Office. 

DJI_20180713_134051Moving aft and turning 180 to stand beside that doorway above and look forward, this shows the rest of the Guest Cabin/Office.  All upside down of course but you can start to get the idea of this nice big space.

In both pictures looking up you can see the ever present integral fuel tanks and all their baffles and get a sense of how this grid construction of the tanks creates such an eXtremely rigid and strong hull bottom.  Just wait till we get the 12 and 15mm hull plates welded on there!

DJI_20180713_134109Stepping back into the Workshop and looking forward through the Workshop door will give you a better view of the length of the Guest Cabin and the doorway leading out of the Guest Cabin “up” into the main part of the Pilot House, the SuperSalon.

DJI_20180713_134224The SuperSalon is our main living area with the Galley, Dining, Lounge and Main Helm station all wrapped in 360 degrees of glass.  The above deck superstructure which is below this area will be added after we flip the boat right side up next month so right now it is a bit difficult to visualise this great room but if you look back at the labeled clip of the 3D model above I think you will get the basis layout.

Here we are standing near the aft end of the SuperSalon in what will be the Galley and looking towards the forward end of the SuperSalon and this will give you a bit of as sense of the size of this room. 

The floor is overhead and the massive frame #13 in the foreground on the right forms the support for the superstructure which will go on after we flip the boat next month. 


These two beams in the bottom foreground provide the support for the forward end of the Pilot House/SuperSalon where the main Helm Station will sit.


What you see looking all the way forward in this photo and the one above is Frame & WT Bulkhead #4 at the front end of our Master Cabin.

IMG_20180709_175036Popping back outside you can see that Sezgin and the other welders have been busy welding up the first two rows of hull plates. 

Uğur and Umit are carefully wedging this intersection of hull plates so they are all flush before Sezgin comes and welds them up.

DJI_20180713_134636Welding all done, fairing bars removed. 

This is standing about mid ships on the Port side looking forward and you can just see the anchor roller assembly at the very far end.

DJI_20180713_152058Saving the best for last, yesterday the latest truck load of aluminium parts arrived with all the pipes and 3D curved hull plates.

DJI_20180713_152843These various size pipes will soon be fabricated to form things like the big foldable arch, the paravane A-frame booms, stanchions, rudder tubes and prop shaft tubes.

curved hull plate bending 2

The curved hull plates are the most exciting, at least for me and these next few shots are from the bending shop in Istanbul a few weeks ago.

This is still one of those processes which has yet to be automated and remains a very rare and highly skilled all manual task so these guys are in very high demand, but Burak & Dincer were able to convince them to send us these 4 shots as they were bending our plates.

curved hull plate bending 3The shop in Istanbul which does this amazing 3D curving of the plates had a very big job that was scheduled prior to ours so we have had to patiently wait for them to bend all our bottom hull plates and truck them to us.

curved hull plate bending 4Difficult to capture but this shot will help you see the complexity of these 3D curves as they were bending this plate.
DJI_20180713_155506Back to real time in Antalya, the forklift soon had all the curved plates off the truck……

DJI_20180713_160237….. and into the shop floor behind Möbius.  Even though it was late Friday afternoon, the boys wasted no time unstacking these very heavy thick plates to get at the first one and starting prepping the edges so they can hoist it up on top of the hull framework and tack it in place next week.


DJI_20180713_155804My hand and thumb will give you a sense of the size of these 12 and 15mm plates. 

The numbers you see are part of a grid which is used to align a series of templates the bend shop makes up from the 2D drawings Burak sent them which they lay on the plate at these points to check that the curves are just right. 

DJI_20180713_155832As you can see these are very complex 3D or undevelopable curves to match the sleek curves of the bottom surfaces of the hull.

As these get tacked in place in the next 2 weeks all those slippery curves of the hull will very visibly emerge and you won’t need any imagination to see this sleek slippery hull.

So that’s the week that was July 9-13, 2018 here at Naval Yachts and the building of Möbius.  The summary video compilation is below and will help put all of the above together for you.

Thanks for taking the time to follow along and remember to add your questions and ideas in the Comments section below.

My My, What a BowTFull Nose You Have My Dear!

Watch That 1st Step!

The heat was way up all this week both inside the building and outside.  Like most parts of the world apparently we had quite a heat wave this past week with daytime highs often getting over 40 degrees.  That’s over 100 for you Fahrenheit types.  Not the best week to chose to really up the amount of MIG welding going on inside but that’s the way it worked out and the boys at Naval never missed a beat.  This was also one of those weeks where the progress is not so visibly obvious as much of the work was going on inside the hull and out of site as Sezgin and the other welders were busy laying down all the welds where the hull panels are in place and the stringers and frames can be welded to them.  As you’ve seen in previous posts and you’ll see if you look closely at some of the pictures below showing these inside areas, the welds are not continuous but done in about 100mm/4” lengths alternating on each side.  This is done to minimize the distortion caused by the heat of welding and has been working out very well.  And this week also brought the milestone of the first continuous welds on the exterior of the hull panels.

And Christine had a fun side trip with some friends to the awemazing ancient theatre of Aspendos so check that out at the end.

But enough words on on with the show!

IMG_20180702_170257As per the title the most visible progress this week was on getting the aft swim platform plated.

PGL sketch 82To help with your visualisation of this area here is quick & dirty rendering of the swim platform.  Stairs will provide additional storage underneath or “inside” from them, the opening to Port/left of the stairs is the fully sealed HazMat locker which will have a WT door on it for storing diesel, oil, paint, thinners, propane, etc. all outside of the boat.  WT door Stbd/Right of the stairs is the entrance into the Workshop and Engine Room and the two boxes on either side are for storage and seating.  Platform is 1.2m/4’ long and 2.6m/8.5’ wide so should make getting on and off the Tender and in and out of the water very safe and easy.  There will be the option of putting stanchions and lifelines along the aft edge to make it more secure if someone might want to be down there while underway hauling in a big Mahi Mahi.

IMG_20180702_170142Back to the real and upside down world you can see the 6mm plate for the platform being lifted into place.

IMG_20180702_170221This manual jack with a board clamped to it is used to push the swim platform plate up tight against the stringers and Uğur tacks it in place.

IMG_20180703_125819If you go back and look at the rendering above you can see how the hull sides make an angled transition around the aft corner and down to the Swim Platform.  The piece you see here is about to be tacked in place along the aft edge of the hull plates.

IMG_20180703_170829Like this. 

As per the rendering there are many more pieces which make this transition and form the seat boxes so you’ll be seeing that take shape in the next posting.

IMG_20180705_135624Meanwhile, inside Sezgin is hard at work as ever laying down miles of weld. 
IMG_20180706_150434If you click to enlarge this photo you can see on those vertical stiffeners how the welds are not continuous but done in about 100mm/4” lengths which alternate on each side to minimize the movement in the AL plate from the heat of the welding. 
IMG_20180706_150453If you stop and think about how many lengths of stringers, frames, stiffeners and bars there are in Möbius you will get a feel for how there are literally nautical miles of weld going in.

Each of which has to be cleaned before and after the welding is complete. 

Team Mobius here at GreeNaval are doing awemazing work!

IMG_20180706_150622Here is a peek into what will be some additional long term storage area underneath the Swim Platform.  Lots of space that can be easily access from the Workshop and is completely sealed with no penetrations on the Swim Platform to preclude any water getting in.  Probably a good spot for the four spare CPP prop blades for example.

That large hole in in the bottom left corner is where the eXtremely large rudder tube extends through the rudder shelf you can see running from side to side where the steering cylinders will be mounted.
IMG_20180706_103146As I mentioned at the beginning of this post, we also had a new milestone this week with the first continuous welds on the exterior hull plating.  Sezgin is truly a master welder.

These exterior welds above the waterline will be carefully ground down flush and flat with hull plates but all other welds will be left to show off their natural beauty.

PGL sketch 74Looking ahead and while we are waiting for the 3D curved hull plates to arrive, construction of the upper super structure can begin marking another stage of construction.  The roof section in front of the SkyBridge holds three of the 14 solar panels and the SkyBridge bimini roof will hold 8 more.  Should enable us to enjoy weeks on the hook in complete silence.

Port side from waterThese two quick renderings will show you how this looks and how the aluminium superstructure will provide the solid framework for all that window glass and form the roof and SkyBridge above.

IMG_20180706_173810Here you see Uğur and Umit are taking together one of the upper frame pieces which will form the roof of the Pilot House.This will form the roof of the raised Pilot House with the SkyBridge on top of that.

Aspendos theatreAnd meanwhile back in Christine’s world she had a fun trip to the ancient city that begat modern Antalya and the nearby Aspendos theatre.

IMG_9083Two sailing friends, Chuck and Patty on sv Soulmates have been docked here in Antalya for the past 2 weeks and we’ve had several chances to spend time with them.

IMG_9081I will let the pictures speak for themselves but this will help you understand more of the reasons we chose to build Möbius in this awemazing area.

So that is the week that was July 2-6, 2018 for us.

As always here is your quick video summary for this week.

Thanks for joining us and be sure to leave your questions and ideas in the Comments section below.