Unidentified sail elements on sailboat drawing

[antaris]

Whilst drooling over some plans of a Vagabond 47, I noted these triangular sail-like contraptions on the attached line drawing (I highlighted them in yellow).

As far as I can tell, these cannot be storm sails (they're too far aft), nor "mooring sails" (I mean the small sail put up on ketches while on mooring, to stop boat movement).

So - what are they?

Many thanks in advance.

PS The original drawing appears here:
http://sailboatdata.com/viewrecord.asp?class_id=3088

 

[davidej]

Are they just artistic license to give the impression of some depth (belly) to the sails ?

 

[Cockaigne]

A means of showing how the cloths are to be laid out

 

[Seajet]

The designers' illustration of load areas on the sails & sheets.

 

[PuffTheMagicDragon]

Are they just artistic license to give the impression of some depth (belly) to the sails ?

I don't think that they could be anything else!

 

[antaris]

Thanks, everyone.

There seems to be some consensus on "artistic licence" building up here and not some other embarrassingly obvious nautical knowledge that I am lacking (of which there's probably a lot!).

 

[lw395]

If you look at other designs from William Garden on that site, several have sail panels sketched in near the clews. I think someone has wrongly drawn a boundary to that?

 

[jwilson]

If you look at other designs from William Garden on that site, several have sail panels sketched in near the clews. I think someone has wrongly drawn a boundary to that?

Agree - the clew areas show the intended "broad seam" direction of the sailcloths. The yellow marker is irrelevant, except to draw attention to that.

 

[PuffTheMagicDragon]

If you look at other designs from William Garden on that site, several have sail panels sketched in near the clews. I think someone has wrongly drawn a boundary to that?

Surely that's where the sailmaker comes in, unless Mr Garden was also one?
It is not unusual for seams on a traditional sail to be roughly at right angles to a line going from headboard to the clew and projected to the leech.