I have ordered an asymmetric spinnaker and a code zero. NADINE is a 2021 348 that I bought new. I sent a drone with a camera up the mast. I have a halyard labeled spinnaker but it emerges through a sheave right above the fractional head stay. On the rigging diagram for the boat it appears that the code zero is meant to be fractional while a spinnaker needs a halyard to to truck at the top of the spar. I do not see a halyard or a sheave at the top. Does anyone have any insight?

So in the end, I got a rigger to cut in a sheave and a dead-end fitting and mount a halyard lead. I knew he'd done it on another 315. 

The parts are Selden:  https://www.riggerne.com/upload_dir/docs/DeadEndBracketMounting_2-1Halyards.pdf" rel="nofollow - https://www.riggerne.com/upload_dir/docs/DeadEndBracketMounting_2-1Halyards.pdf

It looks like this:

I'm very happy with this solution. AND I'm really, really happy I didn't cut the holes in the mast myself :-)

The problem with the halyard just above the forestay, is that there is no room for a furler or a snuffer for the genakker. And often the original sheave is made for a spinnaker which flies "out of" the sheave, whereas the codes and gennakkers are going "closer to the wind" making the halyard chafe on the sides of the sheave.

Although I doubt this is the issue on an "8" series, the 385 used three different mast suppliers (Z-Spars, Starcraft and Selden).  My 2015 boat was was one of the first with a Selden rig which definitely could not support the mast head spinnaker that the sail plan showed.  Presumably the sail plan was not updated with the new rig supplier.

This almost resulted in an expensive mistake in me ordering the wrong size spinnaker.  Fortunately I talked to the riggers at Greifswald who clarified what I needed.

Halyard lead... Roger.

Thank you.

And since you're considering a Code 0, you might also consider a 2:1 purchase on the halyard. A Code 0 needs the luff to be tensioned quite hard.

On my pic from Feb 14th you can see how the purchase of my halyard is made. 

One end of the halyard is spliced to a dead end bracket (left in the picture), the halyard then goes through a Selden block, which is attached to the head of the gennaker/Code 0. The halyard exits the Selden Block and returns to the top of the mast through the halyard lead and the sheave box (right in the pic), and down through the mast.

The Selden high load 2:1 purchase halyard block:

This requires an attachment point that needs some clearance above the headstay. THE NUMBER YOU ARE LOOKING FOR is at least 6" and not more than 18". 

So when the boat came out, I had the yard take down the mast, the rigger put in a sheave, and halyard guide and then put up the mast again. For me, this was $1500 of yard work/crane etc. The actual material to put in the sheave was $90. Got dyneema covered halyard, that was $500. 

Not happy that Hanse didn't include this option on all masts. I know boat prices are competitive, but cmon, trivial to order when the mast is being made, new Hanses range from $200k to 800k, so toss in another sheave for $100 more!

Sorry for the lengthy post, PM me w your email and I can send pics. I always have trouble loading pics to this site, you have to reduce the size of the file. I will try to do that, I think I posted them last fall somewhere on a Hanse site, it might have the FB group. 

Cheers.

Thank you very much for your thoughts.