2021 Delta Ditch Run

Black Jack

Super Anarchist
How was the delivery home? Got a bit sporty in the north bay about 3pm yesterday.
I saw many depart. We thought about it. We are leaving the boat in Stockton for a week.  Whew. I have a large purple bruise on my ass in my recovering the spin or it migh be do to sleeping on the whisker pole after having one too many rums and no pad. Took the Amtrak back from Stockton to Jack London Square.  12 dollars. Easy and fast.  Thought it smart to stretch it over two weeks with a nice weekend cruise home.

 
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Raz'r

Super Anarchist
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De Nile
I saw many depart. We thought about it. We are leaving the boat in Stockton for a week.  Whew. I have a large purple bruise on my ass in my recovering the spin or it migh be do to sleeping on the whisker pole after having one too many rums and no pad. Took the Amtrak back from Stockton to Jack London Square.  12 dollars. Easy and fast.  Thought it smart to stretch it over two weeks with a nice weekend cruise home.
2 stages and stop in Pittsburg Muni marina

 

aA

Super Anarchist
5,025
148
norcal™
we went upwind at 60, boat at the club at 1215, home in bed by 115am

new kite and deck for next year and the little one has to ditch some weight from her bag but she said she’s in for moore

 
An extra long shaft 6 horse waiting in Stockton (transom reinforced) makes relatively easy work of it on the Express. Some suck fest after Korth's Marina pit stop for head, fuel and breakfast, but lots of ebb all the way to Pittsburg. Flood was no biggie and kept chop way down- Suisun and San Pablo were downright pleasant. 11.5 hrs underway and a great way to see everything you missed on the way down.

 

hotsheet10

New member
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0
First ditch on an e27. Hit 15kts and got the boat humming, another first for me. Anyone know if the Moore that went into the levee is ok?

 

atnan

Member
110
52
Alameda, CA
My first ditch, pretty crazy! People have been telling me SC27s crash hard and I got a few crashes under my belt this race - I was struggling to keep the boat under the kite when the stern was being pushed one way by wind waves and the kite was going the opposite way when a shifty gust hit. The kite would start oscillating and bam, we’re over.

Crew and boat made it in one piece, and we delivered back over 2 days with a stop-over in Pittsburg. Thought we’d make it to Benicia but there was no chance I was going to pound through Suisun Bay with the chop.

Today we had one nice long tack from the Richmond San Rafael bridge all the way back to Alameda, which put a nice cap on a great weekend!

 

Chris in Santa Cruz CA

Super Anarchist
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earths surface
My first ditch, pretty crazy! People have been telling me SC27s crash hard and I got a few crashes under my belt this race - I was struggling to keep the boat under the kite when the stern was being pushed one way by wind waves and the kite was going the opposite way when a shifty gust hit. The kite would start oscillating and bam, we’re over.

Crew and boat made it in one piece, and we delivered back over 2 days with a stop-over in Pittsburg. Thought we’d make it to Benicia but there was no chance I was going to pound through Suisun Bay with the chop.

Today we had one nice long tack from the Richmond San Rafael bridge all the way back to Alameda, which put a nice cap on a great weekend!
I never got to test the tweakers on my SC27 in winds like that but I have used them in the past to keep boats and chutes more connected/stable.

 

SF Woody Sailor

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I never got to test the tweakers on my SC27 in winds like that but I have used them in the past to keep boats and chutes more connected/stable.
+1

Also the normal stuff. Pole a little forward and oversheeted to reduce oscillation and keep the seam on the centerline. However, despite the best technique sometimes that roundup/round down just has your name written on it.

 

atnan

Member
110
52
Alameda, CA
+1

Also the normal stuff. Pole a little forward and oversheeted to reduce oscillation and keep the seam on the centerline. However, despite the best technique sometimes that roundup/round down just has your name written on it.
This was my first time driving our SC27 in those conditions, so I'm pretty sure it can be chalked up to lack of experience! I've been doing a bunch of reading since then and I think I/we made a few mistakes:

  • Not keeping the boat under the kite - easier said than done but I think I was starting to get the hang of it
  • Sailing slightly by the lee with opposing wind waves when we could have gybed to match the direction of wind waves or sailed a hotter angle
  • Main sheet wasn't trimmed in enough, which may have been causing the mast head to move to/from windward in the shifty gusts
  • We weren't easing the pole forward / twinging on / moving kite center of effort to leeward when I was getting overwhelmed on the helm
  • I'm not sure what height to set the pole for different wind speeds, but we probably should have lowered the pole

But we (crew AND boat) survived, so it all worked out :)

 

SF Woody Sailor

Super Anarchist
1,112
388
This was my first time driving our SC27 in those conditions, so I'm pretty sure it can be chalked up to lack of experience! I've been doing a bunch of reading since then and I think I/we made a few mistakes:

  • Not keeping the boat under the kite - easier said than done but I think I was starting to get the hang of it
  • Sailing slightly by the lee with opposing wind waves when we could have gybed to match the direction of wind waves or sailed a hotter angle
  • Main sheet wasn't trimmed in enough, which may have been causing the mast head to move to/from windward in the shifty gusts
  • We weren't easing the pole forward / twinging on / moving kite center of effort to leeward when I was getting overwhelmed on the helm
  • I'm not sure what height to set the pole for different wind speeds, but we probably should have lowered the pole

But we (crew AND boat) survived, so it all worked out :)
Keeping the boat under the kite is so easy to read and can be so hard to do. Reducing the oscillation side to side of the kite helps a lot; the pole forward and tweakers and oversheet aren't so much to move the center of effort (NTTARWT) as to prevent the oscillation side to side. Main sheet in isn't necessarily as important as vang on TIGHT. The tight vang gives you predictable side force from the leech of the main. The corollary of course is that you need to have someone on the vang to release it if you start to round up or after you round down.

It would seem intuitive to lower the pole, and in this case the intuition is wrong. Pole lower when reaching, but when running a lower pole brings the leeches of the kite together and makes it deeper which is the opposite of what you want. The pole tip should be nice and high so the shoulders of the kite are far apart.

 

SF Woody Sailor

Super Anarchist
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Nice little writeup in Latitude today.

Can someone please explain the geometry of this photo?

Green-boat-roundup-LynHines_1186.jpg

 

atnan

Member
110
52
Alameda, CA
We saw that happen just as we were taking our kite down for white sail reach.

Here's a video of our day out:



Didn't get any footage when it really started to blow, so this all looks rather tranquil :)

 

JohnMB

Super Anarchist
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555
Evanston
Nice little writeup in Latitude today.

Can someone please explain the geometry of this photo?

View attachment 446825
Ugly but here goes.

the port guy(red) goes through a twing around the mast/bows butt. and then vertically up to the tip of the pole, which is in line with the mast.

From there the guy goes round the front of the mast to the tack of the spinnaker. which is behind the main.

The kite is of course inside out.

The sheet(green) attaches to the clew, and then a wrap of kite passes on the stb side of the forestay, wraps tightly round the front and back to the clew/head. .

what a mess.

 

Chris in Santa Cruz CA

Super Anarchist
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earths surface
Ugly but here goes.

the port guy(red) goes through a twing around the mast/bows butt. and then vertically up to the tip of the pole, which is in line with the mast.

From there the guy goes round the front of the mast to the tack of the spinnaker. which is behind the main.

The kite is of course inside out.

The sheet(green) attaches to the clew, and then a wrap of kite passes on the stb side of the forestay, wraps tightly round the front and back to the clew/head. .

what a mess.
round down and main went over, boat still sailing!

I bought my SC27 from some guys who were trying to race it double handed and in the 3 bridge fiasco I think they had an epic spinnaker event and bent a spreader bar and on the racing main there were big greasy stains on the head of the sail and the spin pole was bent. They bought a multi hull :)

 
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Locus

locus
767
95
Seattle, WA
This was my first time driving our SC27 in those conditions, so I'm pretty sure it can be chalked up to lack of experience! I've been doing a bunch of reading since then and I think I/we made a few mistakes:

  • Not keeping the boat under the kite - easier said than done but I think I was starting to get the hang of it
  • Sailing slightly by the lee with opposing wind waves when we could have gybed to match the direction of wind waves or sailed a hotter angle
  • Main sheet wasn't trimmed in enough, which may have been causing the mast head to move to/from windward in the shifty gusts
  • We weren't easing the pole forward / twinging on / moving kite center of effort to leeward when I was getting overwhelmed on the helm
  • I'm not sure what height to set the pole for different wind speeds, but we probably should have lowered the pole

But we (crew AND boat) survived, so it all worked out :)
The way I learned to steer to a kite ddw in breeze was to go out in medium breeze and sail without then pole and both guys twinged on. No worries about rounding up but you really get the feel for how to keep the bow under the kite. With the pole is then much easier.

2nd on pole height. The top of the spin is pointing up and not contributing to power, and the clues are spread apart flattening the chute overall. Also helps to get a flat cut chute

 
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