I examined several Jongert designs over the last four decades, noticing that the transom or lazarette are getting larger, unobstructed, recreational, also giving better protection to the helm
position, not any longer placed two foot away from stern ( if Mr.C.Archer allows..).
Jongerts, originally pure centerboard
motorsailers, may have pioneered the concept
, also adopted to a measure by the Swans in the last decade, as Wally Yachts first dictated the "sleek" lineage ,(that which I deeply dislike, BTW).
Beyond the 60' LOA
, a large stern platform, maybe stowing water
toys or other, is a given now.
I reasoned whether it could make sense , any change in That direction, on a more traditional design like the one I am using (a S&S-derived design from the mid 80s).
The artifact would be a continuum with present bulkhead/hull lines, some 6-8 foot long (for a Nauta54'), with a flush deck
tight portholes with the closing from outside, sub-like.
No structural function for Rigging
or sheeting would interfere on that add-on, structurally-wise, apart for the mooring
lines, and maybe a fixed stern anchor
1. Extra space, on deck
, and for stowage,
2. Extra buoyancy, if/when needed
3. Additional water-tight bulkhead
4. Possibly, the artifact can be made unsinkable (double layer with closed foam inside)
5. Remarkably, unobstructed Solar panels
, and a rigid Dinghy
, are the most valuable pros upon deck (plus sun-bathing beauties..).
Transoms nowadays are the most looked after section of any boat, bar a deck saloon
1. Cost ☺
2. Any implications with papers and insurance
!?!? I have no idea...
3. Finding the right execution (yard!)
The U shape of the stern section would be matched with a Vented Flange trimmed (by welding) along the bulkheads, being fixed with alternate high-tensile ss bolts acting on inner counter-plates of similar size and thickness.
Where available, the longitudinal ribs or any reinforcing plates already in place could be equally matched and engaged.
Structure would be after glued with fibers and modelled externally for smooth seamless appearance.
The artifact would remain substantially Above the floating line, as being a Sugar-scope indeed (yet closed on deck), with no extra drag, Yet..providing
1. Longer lines when heeling, adding to floating and to Critical Speed
2. Extra buoyancy with high seas from stern
3. Possibly, less hiving (if weight is kept low).
Concern... Which Material??
1. SS AISI 304 for flanges, ribs, maybe bulkhead sheets
2. Expensive, and difficult to weld (?) ERGAL (aeronautic.. Structural Alu) ..ensuing complication in corrosion
3. Carbon fibers!? I feel ignorant on matter, structural design seems to be largely empirical to me....
4. GRP built around a SS, or ERGAL backbone!?
At present, my helm
is less than 3' off the edge of deck, and my stowage area is my major concern/criticism about an otherwise splendid design.
Nauta had already designed a longer scoop for racing
purposes.... and if i well remember... The immortal Sir Francis Chichister stopped in NZ to get a longer bow line
I am just stretching the concept
for an equally noble project