Monday, December 19, 2011
Pressure Drop Year In Review
http://www.pressure-drop.us/forums/content.php?2065-2011-The-Year-In-Review&s=dc8141a96cb3139b4fa44c8ef441e28b
Tuesday, December 13, 2011
Berkeley Midwinters - Dec 2011 - Writeup
Nathan - Helm
Nat - Pit/Tactics
Scott - Foredeck
Bob - Trim 1
Chris - Trim 2
__________________________________
Overall a beautiful sunny, clear and warm december day. We were so lucky to be on the water.
__________________________________
Short notes:
Light air, light current. We played current mainly as the breeze was light but sustained. We went out for the long tack and stayed there as long as possible, minimizing tacks on the upwind and sailing our polars straight to the leeward mark on the way down.
We had a very bad start, fouling two boats and causing us to do our penalty turns. When we were done with our penalty, there was only one boat behind us.
There were some major confusion at the windward mark...(eg identifying the mark! confused a bunch of boats...so we lost some time there sorthing things out)
We then had very good boat speed both upwind and downwind and we picked up half of the fleet.We may have been able to catch up one more boat right on the line. In fact probably more. Looking at the results, some 7 boats were within a minute of each other (and us!) at the finish. So solving our errors could place us in the top 3...
All in all, a good race and a pretty decent performance. I have to admit that I don't race to win just for the sake of winning. If I win because everyone else is awful and I am bad, I would derive no pleasure whatever in it. I race to sail well and better all the time. In this case, I think that we sailed well, and the fact that we caught up with half the fleet despite a really poor start makes me really happy
- and I think that we have in ourselves to sail much better. This slow tacking issue is nagging me...
What we did well:
- PERFECT douses - we held our kite longer than anybody else. Our second leeward mark rounding was text book perfection. A thing of beauty. Scott is the main architect of this although of course it takes the whole team to make it happen. Things were clean and fast and helped gain precious seconds. Ultimately the difference between two boats on the line is down to seconds...so every one of them counts.
- We discussed tactics before the start of the race based on the expected conditions + crew situation (to play to our strength° - when a new situation develop we checked it against our 'plan' and made adjustment as necessary. This is a lot easier than having to rethink the entire plan. So it is going in with a strategy and making tactical adjustments only. Much easier mentally thus freeing up a lot of mental cycles to look around and observe the developments
- Clear and decisive tactical calls (the last one near the finish may have been wrong, hard to tell, the line was not square and we tacked to try to cut it before the next boat up but there was a clear call, a clear driver response and a clear followup action)
- Boat speed - once we got tuned up we were going really really well.
What we can do better:
- Super slow tacks. This was not the regular crew so it is harder. The solution to this is practice practice practice and try with moves that work for the team. Things should just be on autopilot for any kind of wind conditions and head sail combination. We should be able to tack much faster. The skillset of the people on board can make this totally possible. We just need to work better together and individually to make it happen. and practice makes perfect.
- Nat should do her one job and her one job only
- Slow getting up to speed and getting to optimal point after start, after tacks or after sail changes
- we should have adjusted the car positions before the start (not enough time? oversight?)
- crew work for faster tacks
- trim/driving for faster tuneup post maneuvres to get the boat up to speed
- equipment (easier to adjust outhaul for instance)
Berkeley Midwinters - cumulative results
Pos | SKIPPPER | BOAT NAME | Class | SAIL NO | PTS | R1 | R2 |
1 | Zachery Anderson | Motorcycle Irene | Ex 27 | 28137 | 7 | 6 | 1 |
2 | John Rivlin | Peaches | Ex 27 | 18364 | 7 | 3 | 4 |
3 | Dan Pruzan | Wile E Coyote | Ex 27 | 11 | 10 | 7 | 3 |
4 | Ron Kell | Abigail Morgan | Ex 27 | 18394 | 12 | 5 | 7 |
5 | Rachel Fogel | Great White | Ex 27 | 48 | 14 | 1 | 13 |
6 | Steve Lake | Elan | Ex 27 | 28009 | 14 | 2 | 12 |
7 | Ray Lotto | El Raton | Ex 27 | 28050 | 17 | 12 | 5 |
8 | Phil Krasner | Wetsu | Ex 27 | 70 | 20 | 14 | 6 |
9 | Nathalie Criou | Elise | Ex 27 | 101 | 20 | 10 | 10 |
10 | M. DeVries/ S. Parker | Freaks on a Leash | Ex 27 | 51 | 21 | 19 | 2 |
11 | Marcia Schnapp | Libra | Ex 27 | 113 | 22 | 4 | 18 |
12 | Donald Carroll | Take Five | Ex 27 | 28031 | 22 | 8 | 14 |
13 | Steven Katzman | Dianne | Ex 27 | 0 | 23 | 15 | 8 |
14 | Larry Levit | Strega | Ex 27 | 77 | 24 | 9 | 15 |
15 | Ross Groelz | Eagle | Ex 27 | 29 | 24 | 13 | 11 |
16 | Ray Wilson | Luffing Outloud | Ex 27 | 14 | 26 | 17 | 9 |
17 | Peggy Lidster | Opa! | Ex 27 | 18070 | 31 | 11 | 20 |
18 | Jim Gibbs | Moonlight | Ex 27 | 28059 | 32 | 16 | 16 |
19 | Marc Belloli | Magic Bus | EX 27 | 41 | 36 | 19 | 17 |
Monday, December 5, 2011
This Weekend's Race Results
My first time on a dinghy in many many many many years...was on a Byte, same designer as the guy who designed lasers apparently, were too recent for my time as a dinghy sailor...(the photo below is for the 29ers though...another type of dinghy, the Bytes are single-handed boats)
Light air so super challenging on a dinghy. A couple of massively big windshifts too. I was a little too busy
Results below
Michele Logan 1
Laurie Davis 2
Marissa Paulling 3
Gail Yando 4
Mary Cefali 5
Karin Knowles 6
Lisa Twardowski 7
nathalie criou 8
Susan Paulling 9
Elmar Grom 10
Sunday, December 4, 2011
Limitless
With his writing career dragging and his girlfriend casting him off, Eddie Morra's life turns around when he takes a drug that provides astonishing mental focus -- but its deadly side effects threaten his future.
- Cast:
- Bradley Cooper, Robert De Niro, Abbie Cornish, Andrew Howard, Anna Friel, Johnny Whitworth, Tomas Arana, Robert John Burke, Darren Goldstein
- Director:
- Neil Burger
- Genres:
- Thrillers
American Violet
Inspired by true events, this penetrating drama centers on Dee Roberts (Nicole Beharie), a 24-year-old mother of four who's forced to take on a corrupt district attorney (Michael O'Keefe) when she's unjustly prosecuted in a large-scale drug case. Directed by Tim Disney, the inspiring tale also stars Alfre Woodard as Dee's mother, Alma, Tim Blake Nelson as ACLU attorney David Cohen and Will Patton as retired narcotics officer Sam Conroy.
Thursday, November 24, 2011
Berkeley Midwinters GPS Race Track
Thank you Sergey from Libra - quoting him below
'
http://80.249.233.121/IntelliSail.htm
This is the last Saturday race and the following boats are presented in the replay.
Wi – Wile E. Coyote – control boat
Li - Libra – control boat
Gr - Great White – replay performance is scratchy due to the slow GPS track (GPS capture rate 1 point per 20 sec)
El – Elise - replay performance is scratchy due to the slow GPS track (GPS capture race rate 1 point per 20 sec) and replay had started 10 into the race
Pe – Peaches
Op – Opa! – replay started 70 min into the race.
What is available now:
- Track color coding based on the boat speed.
- Distance and time difference monitoring between two control boats (there are two algorithms we are testing VMG based and Tack – wind direction recognition based on the tacking angle) – the second one is generally more reliable.
- Vector visualization – current heading and speed vs. initial (for the tack) heading and average (for the tack) speed vs. VMG and bearing (heading to the mark).
- Track auto segmentation and tack / jib recognition. Along each track you will see small white dots (they are clickable) – these are the points where the heading of the boat had been changed 10° or more compare to the initial heading for the segment.
- Google earth 3D animation, zooming, panning etc.
- Replay speed control.
- Race course mapping – Layline, rhumb line, start line etc.'
We can totally see the slow tacks on this! Pretty amazing...and our boat speed compared to that of the other boats that were in the same wind as we were (comparable)
We can also see the last tactical move right by the finish line with Opa! (the synchronization is off, eg the GPS sampling is not correct, so it looks like one boat stops while the other one moves forward...not quite the case...
Sunday, November 13, 2011
Berkeley Midwinters - some notes
It was a really interesting race, and the results were a mixed fleet which makes the game very compelling for everyone in the fleet - there is no clear winner of the series right now.
Remember that I like to race because a) it is exciting, things are happening and for 'safe' adrenaline junkies it is a cool thing and b) it makes me a better sailor. There is no way I would pay attention to the tiniest detail if I was just cruising around.
A lot of people ask me how a race where the 'race vehicle' move at 3 miles an hour could be exciting. Then you put them on a boat, in 5 knot winds and in the middle of a race where there are 5 boats rounding a mark in very close quarters, with hulls within inches of each other and all of the sudden their opinion changes to 'you guys are suicidal'.
Obvoously, it is not. A lot of people sail recreationally, a lot of people race their boats and there are far fewer sailing accidents than skiing accidents, and the great majority of accidents or rather incidents, happen in ports...as boats get in and out of their slips.
What thing that I like about racing sailboats is the complexity of the sport. It is not just about skills, it is not just about tactics, it is not just about crew work, it is just about your competitors, it is not just about variation in the weather pattern or currents. It is about all of that.
Saturday's race was a good example of that. It is a 'round the buoy' race, one design (eg there was a start for the Express 27s and we were all racing against similar boats in a manner that was governed by class rules, in order to make the racing as equitable as possible). During these races, you don't want to be the Swiss Army knife racer that you need to be offshore, you need to be the laser-sharp razor...
There are several factors that make you win a race, and they are really equally important if you want to have a chance of winning, or of placing.
- Good boat speed/sail trim/smooth driving - pretty obvious. If you are slow in a race, you are not very competitive. Boat speed comes with several things but in light air, I would say active trimming using every single line and control for both head and mainsail constantly, smooth weight management, little tiller movement, strong and unrelentless mental focus on part of everyone, ability to spot wind pockets, current lulls and try to get clean air as much as possible are strong component of that. And a boat as light as possible.
- Good tactics - even if your boat speed is fantastic, if you consistently miss laylines, take 5 times as many tacks as the other boats, sail right by a mark, end up fighting current when the other boats are in current relief, if you end up in the wind shadow of everyone, etc...you probably won't be doing super well.
- Fast maneuvers: this takes the entire team - and it is why sailing is such a team sport. A good driver will not win a race against a boat with a good driver and a great team. The former will lose out to the latter on every maneuver. The maneuvers also depend on a good driver of course -
- Fast setup: obviously, if you have a really fast crew member who could move from side to side very fast but if you put a couple of walls for this person to jump over; he or she will be significantly slowed down. Likewise, making sure that the set up of boats reduces friction for every maneuvres will be helpful. Lines should have little friction, important controls should be readily accessible and easy to adjust - from wherever the crew would be best placed from a weight perspective. An example of this is that on Elise, we adjust the backstay right on the mainsheet post, so the driver does not have to move at all. The lines for the main sheet, the traveler and the backstay, the three things that the driver constantly needs to adjust for the mainsail are all in the same area and accessible from the high side.
- Great teamwork: on a sailboat, and in a race, everyone has a very specific job to do. In certain emergency situation, a crew member may ask for help but otherwise, it is important for everyone to stick to their job and be excellent at it. It frees up the others' attention so they can focus on their own jobs. Because a lot of jobs are synchronous (for instance between the foredeck and the back of the boat, people are working on the same line, just opposite ends of it, so they must work together) so learning to work with the others make a big difference. The best crew have been practicing and racing together for a long time.
- Good starts: on a long distance offshore race, or long distance single-handed race, not starting first is not such a deal breaker. In a super fast regatta where tenth of seconds matter getting a bad start can have desastrous consequences. It may not cost you placing, if you can slowly make up for it and if you are given a long course, but it probably costs you first place in most cases.
Team positions:
Helm/Main Trim: Nat
Trim 1 (sheet downwind, jib trim upwind): Mark
Trim 2 (pole downwind; jib release upwind): Kathy
Pit/Tactics: Nathan
Foredeck:Scott
Our course was: Upwind Start - Windward Mark - Leeward Mark - Windward Mark - Leeward Mark - Upwind Finish
Well on Saturday, the wind was light to medium. The most we saw was 8 to 10 knots, and it went as light as 1 knot of wind. There was some light current. There were crowded mark roundings, tactical plays between boats trying to blanket each other (a sail is a moving wall and if you are on the other side of the wall, the wind doesn't look as great...) and wind shifts of over 30 degrees. One minute, sailing upwind, you would be heading toward the mark, the next you would be sailing away from the mark, on the exact same point of sail.
At some point the wind picked up and clocked west, so the boats that were able to take advantage of this early on did very well for themselves.
Start
This is the view from the driver, which focuses a lot on sails and obviously driving the boat, so very limited view, the tactician would be the one with the most comprehensive view of the race.
Even at the start, the team has very specific roles:
The tactician decides where the boat should be positioned on the line and gives that input to the driver who will then do whatever he or she can to achieve that. It is a very busy area, so it is not always possible and timing is critical to hit the line fully powered up and it takes team work.
Trim 2 or pit tends to be the time keeper (and one is the backup of the other) - there is a countdown sequence to the start and it is crucial that the driver know how much time is left at any time.
Foredeck tends to call for traffic behind the jib (so the driver does not have to focus on the low side) and distance to the line close to the start, so the driver knows whether it needs to slow down the boat or accelerate.
Trim 1 trims, tacks or gybes the headsail, as the boats moves in all directions and keeps turning around during that time, this requires constant attention.
Elise had an ok start. We were on time to the line but in really bad air, and no easy way to tack out of the pack for a few seconds, so we lost to a couple of boats. We tacked at the first opportunity to get ourselves clean air and open up our tactical options. Stuck in-between boats is not only slow but quite limiting in terms of movements :)
The line was super long, you could have fitted a fleet twice as numerous on it. However, given the position of the windward mark and the big swooping wind shifts, one end was favored for a few seconds, then the other side of the line became strongly favored. Not really knowing which end would be favored when the gun goes off and given the time it would take to go from one end of the line to the other, we had decided to start midline. The problem is that 50% of the fleet started above us and really close to us, stealing our wind. We'd hoipe they'd be much closer to the end of the line, but they obviously made the same reasoning.
First Upwind
It took us a while to get the right sail trim to get the boat speed up, but a couple of good tactical calls around wind shifts and good sail trim got us going pretty good and we picked up a few boats on the first upwind. We tacked a little too early for the mark and had to make one extra tack.
Our tacks were not very good in the first upwind. Both driver (over steering) and trimmers (not trimming in fast enough and backwinding the genoa) contributed to that. It got better and better throughout the race and we talked things through while racing and we ended up with the perfect tack seconds from the finish. More about this later.
First Windward Mark rounding
First mark rounding was in a busy area, we were the inside boat - our sets were consistentlyg ood. Our spinnaker was up way before that of the other boats rounding at the same time as did.
First Downwind
Good downwind speed and we put some serious distance between us and the other boats who also avoided the (restricted) start/finish line on the pin end. The other boats including Wile E Coyote who rounded the line the other way actually had to sail more distance and lost ground to the boats on our side of the course.
We also sailed a fast route, sailing our polars AND because of the wind shifts, we did not have to gybe enough.
We were getting ready for a mexican douse (the boat gybes at the mark and goes up on the other tack, so the pole needs to be removed in order to allow for the gybe and the spinnaker is taken down as the boat gybes - a pretty cool maneuvers and a variant on a windward douse)
Good and fast rounding and back upwind OK.
Second upwind
Our rounding was good and we went back up. We ended up in a lull even though we could see the wind line. We didn't quite sail into it and continue on our way to the mark. the wind shifted by over 30 degrees and we cracked down because beating up close-haul would take us way past the wrong side of the mark (all roundings were to port).
Good boat speed overall but our tacks were still slow, it took a long time for the genoa to be trimmed back in hence for the boat to point again at full speed. We were losing ground to the other boats whenever we tacked and they were not.
The driving was better during the tacks after the driver paid attention to the tiller much more - no more oversteering which had been an issue during the first upwind.
Second windward mark rounding
There were 10 boats within the mark zone (a circle three boat-length big around the mark) and all at various stages of rounding. The downwind boats had right of way and were getting to the mark on port (like all the other ones, because of the wind shift, we all got caught in) - Elise had to avoid three downwind boats - there was only a narrow corridor in which to do that, so we had to alter course and point much closer to the wind, about 30 degrees away from the mark.
I made a mistake then, I was driving on the high side and could not see the mark - so when the crew shouted 'head down', I didn't put two and two together and only went down a few degrees.
Nathan, our tactician, eg the one I listened to, repeated 'head down like you MEAN IT' - I poked my head down, saw the mark and quickly adjusted - we just made the mark as the inside boat, rounded really close to it and got in right in front of Strega.
We overtook several boats during that rounding.
Second windward mark rounding
We were close to Wetsu and Strega - with both of them wanting to sail higher than we were to take our wind. We were also sailing faster than Elan and went up to take their stern and cover them to windward. We luffed up Strega (the leeward boat has right of way and by sailing a high angle, we are preventing a boat to pass up on the high side. Ultimately this was not taking us any closer to the downwind mark so we gave up.
Wile E Coyote has just rounded the mark and decided to tack around the mark. They were heading our way. We were both on starboard tack (the 'right of way' tack, just a convention really, just like someone decides which side of the street you need to drive on) - however they were leeward of us, and therefore had right of way. (this is common sense, the boat that risks being blanketed by the other has less maneuvrability hence right of way as is less able to move out of the way) - we waited until the last minute to see if we could cross in front of them, when it became obvious that it would not be possible, the driver had to make a call and gybe the main, turn the boat dead downwind boat to avoid them, and immediately afterward, gybed back to go back to the mark. This cost us one place as Strega nicely passed up at that time, as we were getting our boat speed back up.
Doh!
Berkeley Midwinters - Race 1 Results
A bullet for Great White!! Go Rachel!!
The key to the race seems to be the Westerly that filled in in the afternoon, the first boats catching it were the first boats to finish.
Sail No Skipper Boat Name Boat
48 Rachel Fogel Great White 1
28009 Steve Lake Elan 2
18364 John Rivlin Peaches 3
113 Marcia Schnapp Libra 4
18394 Ron Kell Abigail Morgan 5
28137 Zachery Motorcycle Irene 6
11 Dan Pruzan Wile E Coyote 7
28031 Donald Carroll Take Five 8
77 Larry Levit Strega 9
101 Nathalie Criou Elise 10
18070 Peggy Lidster Opa! 11
28050 Ray Lotto El Raton 12
29 Ross Groelz Eagle 13
70 Phil Krasner Wetsu 14
0 Steven Katzman Dianne 15
28059 Jim Gibbs Moonlight 16
14 Ray Wilson Luffing Outloud 17
Sunday, November 6, 2011
The block project
Nathalie: OK, so the block project is a block replacement project. You see the block you have in your hands needs to replace the broken block that is sitting on the cabin top
Mark - OK, replacing the broken block
Mark - OK I am done. The new block is now also broken and with its content all over the cabin top. I did just what you asked.Offerings
It is threatening to rain, so we will make an offering to the Wind God to ask Him to blow these dark clouds away.
[[posterous-content:pid___0]]Kathy is all set to go. Note that she carries the offering in the little pouches by her side.[[posterous-content:pid___3]]The altar boys are getting ready[[posterous-content:pid___1]]Kathy - let's hope it'll work[[posterous-content:pid___4]]Kathy is reaching the top of the Wind offering TotemFirst Kathy kneels down to show respect to the Wind God
[[posterous-content:pid___5]]Kathy has reached the top of the Wind Totem[[posterous-content:pid___6]]Kathy ' please Wind God, accept our humble offering
[[posterous-content:pid___8]]And it is working!! The sky looks so much friendlier[[posterous-content:pid___2]]
So the altar boys are getting ready to bring Kathy down
Photos courtesy of Serge's camera
ps: we were just replacing the little windmill of the anenometer...
Boat Work Day
Mark, Kathy, Serge, Nathan and I did some work on the boat today - and achieved a lot
Photos to come
- Got new bridle and tried it on
- Fixed connection of the small solar panel
- Fixed the windmill for the instrument anenometer
- Cleaned up some of the electrical connections (the rest should be done this week) - eg connectors are sanded off to remove corrosion then we apply dielectric grease on the connection as we re-establish it. Sometimes connectors have to be replaced when they are beyond repair - make sure that heatshrunk water-tight connections are still water-tight or redo them
- Did most of the (fixing autopilot Ray support on deck) - now needs to be drilled through so we can put the actual support piece when the epoxy dries up
- Experimented + got the blocks and ran a line all around the boat to provide steering mechanism from any part of the boat for short-handed sailing
- Replaced twing connection points to the toerail by shackles (instead of spectra lines as the line was chafing too much)
- Check the rake of the boat and modify it
- Check rig tune (both numbers and symmetry) - and it was all fine
Wednesday, November 2, 2011
Great Pumpkin Post Race Fun - Sunday
Photos courtesy of Super Serge[[posterous-content:pid___0]] The art of rafting up[[posterous-content:pid___1]]Hanging out after the race. Even without cushions, Elise's deck can be pretty comfortable.[[posterous-content:pid___2]][[posterous-content:pid___3]][[posterous-content:pid___4]]Seasoning up[[posterous-content:pid___5]][[posterous-content:pid___6]][[posterous-content:pid___7]]Oysters! Courtesy of Kathy. There was an oyster bar! Delicious![[posterous-content:pid___8]][[posterous-content:pid___10]]A smiling Suzanne![[posterous-content:pid___11]]Roger passing the Pumpkin Pie[[posterous-content:pid___12]]And being happy :)[[posterous-content:pid___13]][[posterous-content:pid___14]][[posterous-content:pid___15]]And a smiling Kathy![[posterous-content:pid___16]]Bread and cheese...I wonder who did the shopping [[posterous-content:pid___17]][[posterous-content:pid___18]]The photographer...on Stink Eye
Tuesday, November 1, 2011
Great Pumpkin 2011 - Saturday Photos
Photos courtesy of Ultimate Yachtshots - http://ultimate-yachtshots.smugmug.com/
Crew:
Nathan: helm
Nat: pit/tactics
Mark: trim 1
Suzanne: trim 2
Scott: foredeck
[[posterous-content:pid___0]][[posterous-content:pid___7]]Sailing a really hot angle with the spinnaker up as the wind got really light[[posterous-content:pid___6]][[posterous-content:pid___5]][[posterous-content:pid___4]]Elise passing a boat from leeward!!![[posterous-content:pid___3]]Great lighting :)[[posterous-content:pid___1]]The Moore 24 struggling to keep their kite full.
[[posterous-content:pid___2]]
Apparently there is a Moore that beat all the Express 27 at the event, even though the Moores started 5 minutes after the Express. Here is a Moore in the middle of the Expresses :)
Well done!
Norcal Sailing writeup of Great Pumpkin
Nice writeup and pictures on Norcalsailing of the Great Pumpkin
Monday, October 31, 2011
Great Pumpkin Sunday results
Overall a great race that saw some really good team work, good tactical calls except for the last leg where we could have picked up more boats and the finish line ;-) Great sailing in super light and nearly dead air, with strong current plays and a little bit of sailing at the top end of the genoa with a light rail. So great conditions to practice loads of trimming in all sorts of sailing angles from a close beat to broad reaching.