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March 30, 2009

See VALIS via AIS!

Greetings!

As you may know, I am working on the nav-electronics aboard VALIS. Previously we had an AIS receive-only unit, but I have now installed a full Class-B transponder, which means that other vessels with AIS receivers can see us too. Yesterday I finished wiring the unit and decided to leave it running.

You can now see VALIS, tied up in her Sausalito slip, on at least one website: http://www.hd-sf.com/livemap.html . The guy running this site is collecting the networked feeds from several AIS receivers located on the hills surrounding San Francisco. I am also sending him a feed from my receiver (on the ridge north of Bodega Bay). In turn, he gives his aggregated signal to other websites, such as http://www.boatingsf.com/ais_map.php (but this one isn’t displaying Class-B AIS targets).

VALIS is not required to transmit her position, and there is a little switch we can throw that puts us in “stealth” mode during a race, but I figure that the intimidation factor of broadcasting our position is a bonus – they will know where we are and not be able to do a thing about it! (or laugh until they pass out from lack of Oxygen, at which point we can sneak around them.)

Hoo-Boy!
-Paul

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February 15, 2009

My NMEA Logging, AIS, (etc) Program

Last year I mentioned my NMEA logger program (Windows), that captures, logs, plays, displays (etc) NMEA 0812 data. It provides dial displays of most data, as well as AIS display/alarm, depth alarm, MOB alarm, stripcharts, etc. I took it to Hawaii and back during the ’08 Pac Cup and have been bugfixing and feature-creeping since then. IMHO, it’s pretty useful. You are welcome to use it for free, and I would welcome any constructive comments. I do not intend to add chart-display. The screen is optimized for the (tiny, low power) EeePc, but it works fine on larger computers.

In particular, I would appreciate any NMEA capture files you might generate, so I can test it on other people’s data.

Here is the main screen:

For more details (and to get the program) look here: http://www.sailvalis.com/NavMon/index.html

I almost forgot:  This is free, support is not guaranteed, in fact, nothing is guaranteed.  It doesn’t hurt to ask, though.

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February 1, 2009

Three Bridge Fiasco Report

Rich and I had a great time sailing in the Fiasco.  We saw some old friends, made some new ones, had a few minor close-calls, and experienced quite a variety of conditions.

Our start time was 10:18:18AM.  Almost a dozen other boats shared the same starting time, and since the various starts were spaced by about one minute it was quite an adventure just getting to the line and crossing it without incident. 

The wind was light from the east (more or less) at the start, and continued to lighten until a big group of us ended up being parked before even reaching the Blackaller buoy (near the Golden Gate Bridge).

The adverse current and the lack of wind called for deployment of our “secret weapon”

While anchored we made some sandwiches and kicked back, enjoying the sight of some of the competition drifting backwards.  This lasted for the better part of an hour, until the wind began to fill in from the west.  We weighed anchor, rounded Blackaller, and began sailing across the Golden Gate towards Angel Island.

Rich and I had sailed the course the day before, but the wind was totally different on race day.  On Friday there was a big patch of dead air through much of Raccoon Strait (between Angel Island and Tiburon), but today there was a good breeze all the way through.  We rigged the spinnaker as we approached the Strait, but a wind shift meant that our pole was on the wrong side.  Since I had virtually no experience flying the kite shorthanded, I decided to keep the pole where it was and wait until we were leaving Raccoon before launching it.  Back on Port tack, we then flew the kite all the way to Red Rock.

 

We rounded Red Rock in a clockwise direction, while watching a smaller boat bang her keel on the rocks closer to shore.  She bounced off and continued on, seemingly no worse for her little adventure.  Once in the lee of Red Rock, we had a real struggle getting the rest of the way around.  The wind was light, and the current was sweeping us toward the Richmond Bridge pillars.  We managed to avoid contact by sailing under the bridge.  We then fought our way back into the central bay in a series of close tacks, with the current often cancelling any gains made.  We eventually made it though, and began our passage to Yerba Buena Island.

On this leg, the wind really picked up.  It was still coming from the west, and we definitely made some points as we waterlined many smaller boats.  Most of the fleet sailed through the main channel (see the previous entry about the Coast Guard’s warning about this channel), but we took the recommended alternate channel. 

As we rounded the Yerba Buena we were pleasantly surprised to see a number of competitors trapped in the light air behind the island.  We passed well to the outside of them and stayed in good breeze.

We tacked our way under the bridge and out towards Alcatraz.  Our last long tack took us behind Alcatraz, then straight to the finish buoy.  One final tack took us over the line at around 5:45PM.  We then sailed back to Sausalito where we had a very nice dinner with friends and family, who had been watching the race from Angel Island.

I don’t yet know how we placed, but I assume it was in the bottom third.  I do know that boats were still finishing right up to the 7:00PM race deadline.  It was a long day, but a very enjoyable one for sure!

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January 25, 2009

Three-Bridge Fiasco

VALIS will be racing in the “Three Bridge Fiasco” on Saturday, January 31.  This is a race sponsored by the Singlehanded Sailing Society (with singlehanded and doublehanded divisions) and should be a lot of fun.  As this point there are 322 entries, and there is still almost a week to go for sign-ups.  VALIS will be sailing doublehanded, and the crew will be Paul Elliott (me) and my friend Rich Jones (who sailed on VALIS in the ’08 Pac Cup).

This race starts off of the Golden Gate Yacht Club (next-door to the St. Francis YC, where the Pacific Cup starting line is), and the course touches the Golden Gate Bridge, the Richmeon-San Rafael Bridge, and the Bay Bridge.  These marks can be taken in any order, and the start/finish line can be crossed in any direction.  This is a “pursuit race”, where a boat’s start time is determined by her rating.  Thus, crossing the finish line ahead of another boat means you have beaten it, since the handicap is applied at the start.  With start-times ranging from 9:30AM to 11:38 AM (ours is 10:18:18), and with over 300 boats crossing the line in both directions, the “Fiasco” is well-named!

Here is the general course:

Note that the course doesn’t actually go under the Golden Gate or the Richmond Bridges, but instead around the “Blackaller” buoy and around Red Rock:

Blackaller is near Fort Point, and Red Rock is just south of the Richmond-San Rafael Bridge.  Note the security zone around the long wharf to the east of Red Rock.  This is where the oil tankers tie up, and the Coast Guard will come out and point their guns at you if you get too close.  If you get too close you will be disqualified from the race (if you survive).

The third mark is Yerba Buena / Treasure Island, and to round this you definitely need to sail under the Bay Bridge.  There is construction going on and the Coast Guard is advising boats to keep clear of the “G-H” span where there are moored barges:

The race strategy will be driven by the predicted winds (which are often quite light in the winter), and by the currents.  I expect that we will run the course clockwise (Start -> Blackaller -> Red Rock -> Yerba Buena -> Finish), but we may change our minds on race day.

I will be bringing a camera, so tune in next week for photos and our thrilling race commentary!

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November 22, 2008

VALIS is a Cover Girl!

And here she is, gracing the December 2008 edition of SAIL Magazine:

This shot was taken by Peter Lyons, when we were heading out the Gate for a pre-Pacific Cup offshore overnight shakedown.  From left to right the crew is: Rich (at the helm), John (completely hidden behind Rich), Michael, Alan, Steve, and me up forward.  Steve and I were re-running the spinnaker guy, which was tangled with the jibsheet.

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October 26, 2008

Pacific Cup Article in Blue Water Sailing Magazine

Michael Moredzadeh has written a very nice article about the 2008 Pacific Cup, for the October issue of Blue Water Sailing magazine .  Along with credit to many of the winning boats, Michael includes a look at life aboard VALIS as we prepare, race, and party in Kaneohe.  Plus, VALIS and her crew get some pictures!  Paul says “Check it out!”

Click here to download the pdf  (courtesy of Pacific Seacraft and Blue Water Sailing)

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October 24, 2008

Pacific Cup Race Photos

The photos from the 2008 Pacific Cup are now on the VALIS website: http://www.sailvalis.com/Pac%20Cup%2008/Race/index.htm

I will eventually be putting up a race/track/weather analysis, but these shots will have to do for now.

-Paul

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October 17, 2008

Pacific Cup – Google Earth Track

Here is a Google Earth trackfile of VALIS during the 2008 Pacific Cup:
valis-pacific-cup-2008

The start of the race is shown in detail, with position samples taken every few seconds. There is a “jog” as we pass under the Golden Gate Bridge that didn’t really happen — we just lost the GPS signal for a moment.

VALIS Race Start Track

VALIS Race Start Track

The trackfile has some unfortunate gaps (especially the last day of the race), but it does show our general track as well as some interesting maneuvers (look at the track around 7/23/2009, 12:00UTC where we shrimped the spinnaker, for example).

VALIS Race Track

VALIS Race Track

It is interesting to see the ship traffic we encountered on the way to Hawaii. Using the Google Earth controls you can turn on and off the display of all the ships we tracked with our AIS receiver:

Ship Tracks via AIS

Ship Tracks via AIS

So, what exactly happened during these mysterious gaps in the track? I vaguely remember an intense pink laser beam…

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September 7, 2008

Pacific Cup 2008 Return Voyage – Photos

I have just uploaded to the website a photo album for our return trip from Oahu to San Francisco:

http://www.sailvalis.com/Pac%20Cup%2008/Slides/

Night Watch

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August 25, 2008

Whale Encounter


A Brush with a Whale

As we were approaching San Francisco on Friday, August 22, about 40 miles due west of the Golden Gate Bridge we encountered a very friendly pod of dolphins.  They swam alongside, crossed our bow, and jumped regularly.  We were taking photos and this video when we brushed against the side of a whale.  It was a fairly gentle bump, and I don’t think either the whale or VALIS were harmed.  The whale was definitely not amused, though.  After the impact it slapped the side of our boat above the lifelines with it’s flukes.  As you can briefly see in the video, there were two whales swimming side by side.  Credit must be given to crewmembers Oliver (who can be heard shouting “Hard to port!”), and Aaron, who rushed back to the helm to turn away from the collision, likely preventing a more serious impact.

Whale.mpg

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