And turning around here is the shape going aft towards the prop tunnel and skeg which is that fin shaped extension where the prop shaft goes through. The propeller sits immediately behind this foil shaped skeg the shape of which you can start to make out from those curved thick vertical plates you see here. This will all be sheathed in aluminium plate in the coming weeks.
Moving aft you can see that Team Möbius has prepped all the edges of these 12mm/1/2” and 15mm/5/8” thick hull plates for the Starboard side and have them all stacked up and ready to be lifted up atop the upside down hull.
The middle bottom area of the hull is the widest and the plates become long thin triangles where they fill in the area between the third upper row of plates you see here and the central keel bar so they set these plates up at the very top to await their turn to be fitted later in the process. Watch the video at the end to see this all in action.
Looking towards the bow you can see how the wider set of 3rd row plates are set in place resting on the large flat bars which have been welded along the whole length of the upper edge of the 2nd row plates to keep them perfectly aligned as the 3rd row plates butt up against them.
Looking aft you can see that the whole 3rd row of plates are now set in place with their overlapping edges being aptly similar to fish scales to my eyes. Bar clamps are for safety to ensure that the loose plates can slip off the flat bars.
Nihat and Uğur start work on the 6m/20’ long bow plate by welding on this temporary tab to help them slide it forward into position up against the Stem Bar using a chain tackle and pry bars.
This closer look at the aft edge of that first 15mm/5/8” thick bow plate and the underlying WT bulkhead frame and stringers will give you a sense of the eXtreme strength of the underwater bow section.
If you look closely (click to enlarge) under my thumb you can see how the stringer has a step in it to accommodate the 12mm thick plate which will slide in here next.
Which goes very quickly and you can now see the smooth shape of the forward section of the hull. This is a very critical section of the hull as it makes the transition from the initial piercing of the water with the axe like shape of the Stem Bar and then widens out gradually as the beam of the hull widens. It is quite a tricky transition as we want the knife like slicing into the water and waves and at the same time we want to have good flotation or upward lift in large seas to prevent the bow from digging in. Some of this comes from careful design of these shapes and transitions and some comes from keeping this bow area as light as possible.
You may recall that the first meter of the bow is a fully air and water tight “collision” compartment and the next 3 meters are the relatively empty forepeak storage area so all these features combine to provide the just right combination of wave piercing and bow lift when needed.
Standing up where the 25mm thick Stem Bar makes its transition into the Keel Bar and looking almost straight down the Keel Bar you can see how this cutting edge of the bow is both knifelike sharp and yet ice splitting strong.
In no time flat he soon has all those slots you’ve seen in previous postings all filled up with weld now. These will be ground down flush with the surrounding hull plate and disappear once we do the final finishing of all the exterior aluminium with rotary sanders and 3M abrasive pads to create a uniform finish to the beautiful raw aluminium.
I captured much more of the process of living all the hull plates in place with video so be sure to watch the time lapse video compilation below of this week’s progress.
But wait, there’s more!!
The roof trusses are due to go in next week so I will keep you posted as construction continues over there.