Home Port; on the Delaware River at Fox Grove Marina Essington PA.

Skipjack Inspired Sloop Rig Conversion 2017-2018

Gaff rig experiment induced a larger lateral force on the mast at gaff goose neck than I am comfortable with. So for 2018 I will be experimenting with a triangular mainsail.

View at right sidebar "Gaff Rig with Headsail on Sprit Conversion 2016-2017"




Mainsail
approx 14'-0" x 14'-0" x 19'-4" = 98sf
the gaff sail was approx 14x8x8x16 = 80sf

Add caption

Scarf (scarph) joint to extend mast 2018-2019
For 2018-2019 I will be extending the mast to 20ft using a cedar 8ft or 10ft 4x4 with a sraph lap of 4ft or 5ft.
The current main sail will be reused at the jib  and a new 16ft x16ft or 18ft x 18ft mainsail will be used.
Scarph joint to extend wood mast from 16ft to 20ft.
17ft boom with 144sf main produces a cockpit head height just over 4ft.
16ft boom with 128sf mainproduces cockpit head height of approx 5'-6".
The extra 16sf sail area is not worth a crack on my skull and only represents an approx 12% increase.
With current 16ft mast main sail is 14ft x 14ft = 98sf the additional 30sf, approx 22% increase is worth the effort.
New goose neck on dutch tabernacle
Mast counter weight
Mast counter weight installed
Furling headsail and shrouds installed.
On a cool June 2nd Saturday morning sail, the Kort modification performed well, and head sail provided for a gentle sail in extremely light winds (flags on shore were limp) against the last hour of an ebb tide.

But a baggy mainsail shape failed to fill even in the few errant gusts from low flying aircraft coming in to land (low enough to see the landing gear tire treads).

No camera this time.

So back to the drawing board?

Without spending much time  I will experiment with a loose footed main next.


Loose footed boomless main.
So maybe an Alado furler on the headsail???
Increase the sail area on the headsail???




No comments:

Post a Comment

Ulladh

Ulladh pronounced "ul-la" (null lad).





Uladh the gaelic spelling for the territory of the U-Nail chieftains in the ancient Irish province of Ulster (English/Norse), originally the counties of Down and Antrim, but now including Derry, Armagh, Tyrone, Fermanagh, Donegal, Cavan and Monaghan, also referred to as Ulidia (Greek/Roman),.



Uladh was the home of a pre-celtic, cruithne (crew-en-ya) pictish tribe, who may have been descendants of prehistoric tribes indigenous to the British Isles since the retreat of the last ice age.



Evidence from cut marks on deer bones from more than 30,000 years ago found in the karst formations of the Burren probably from hunters suggest a homonid precence. Archeological finds date first inhabitants (DNA evidence suggests dark or black skin and blue eyes) to about 6,000 BC and trade goods from Rathlin Island, County Antrim off the northeast coast of Ireland made from porcellanite stone appearing in Egypt and Crete by 2,500 BC.



The early tribes of Ireland where displaced by later waves of migrants from mainland Europe; about 1700 BC by bronze age tribes, celtic tribes about 500 BC, and in the past two millenia; Roman trading posts, Viking settlements, English plantations... and in the 21st century a welcome increasing diversity from the European Union and the world.



SV Ulladh (for vhf clarity I use "sailing vessel ul-la") is named for the territory of the first peoples to settle in Ireland after the retreat of the last ice age.



Fisksatra

Since 1949 Fisksatra Varv in the coastal town of Fisksatra Sweden, built fiberglass boats from dinghies to a 300 ton minesweeper for the Swedish Navy.

The Havsfidra 20's were built between 1968 and the late 1970's to Swedish Navy and Lloyd's certification standards.

The Havsfidra 20 and a larger version the Storfidra 26 where sold in the United States by Continental Yachts and Trawler Agency of Atlantic City NJ.

Havsfidra; sea-feather?
(fidra; to touch or tickle with a feather -Icelandic-English Dictionary, Clarendon Press 1874)