Welcome to L-36.com
Starting on Time with GPS -- Getting to the line at the gun going fast
Weather Page UpdatesIt has been about a year since I reported on the L-36.com Marine Weather page. There have been many improvements to the page in that time that I want to share. The page has been well received and has hundreds of users. I thought it would be useful to point out some of the improvements for those of you who have not tried it recently.
Wind MapThis is an experimental page that will show the wind for nearby reporting stations. There are three sources of reports: Local and regional Airports, NOAA Buoy Data Center, and Local weather stations. The local version of this page uses all three. The wide area only the official stations which are from the first two. Please check out this site and give feedback. What do you like and what do you want to see added or changed?
No Shackle Toggle Halyard
UPDATE: New configuration shown!
|A 8:1 Vang system that is cheaper than using two fiddle blocks, lighter, and stronger. What is not to like? You just run the control line back to the cockpit where you put a cam cleat. You will likely need a turning block on deck but then you have the vang where you want it when it needs to be released quickly before you round up.
The second vang system shown is the 20:1 vang on Papoose. This is a unique system with some advantages that are discussed.
This page also has a link to 16 standard variations on vang systems.
Eventide Sails Again
|I am happy to report that the L-36 Eventide returned to the Bay on New Year's Day 2012. After our very well photographed adventures at the 2011 Master Mariners Race I faced a tough decision about whether to restore Eventide. Her hull had basically been sawed through from deck to just above the water line by the other boat's chain link bobstay, and her spruce mast and boom were shattered into multiple pieces beyond repair. Eventide had been so thoroughly restored by her previous owner "Chairman" Bob Griffith and given me so many good times that I decided that if I could find a used and affordable mast and boom that the hull was worth repairing.|
Creating the Easy to Use Waypoint and Route ProgramThis winter I am racing on a Tartan-10, not my L-36. We are racing the winter series out of South Beach Yacht Club and another one out of the Golden Gate Yacht Club. The skipper doesn't use a GPS and as I find them indispensable in sailing to a mark and in calling the layline, I brought my wrist version along. But first I needed to program in the waypoints and routes. What a pain. I used OpenCPN and plunked a waypoint down over the marks on the map. Entering the routes was the most difficult. That led me to build the waypoint and route editor. Then I thought, wouldn't it be great to just have a list of all the marks in the area and just check them off, rename them to match the names the race committee uses, import them into a program, copy and paste the race committee routes onto a page and press a button (after a little editing perhaps) and have a file you could download into your GPS? So I built just that.
Lazy Lightning racing toward the Bay Bridge
GPS GPX Batch Waypoint and Route Creator
|Entering routes into a GPS when you have a number of them to enter is easy with this bulk route editor. Import waypoints from a gpx file or enter directly into this page, then simply write out the routes all at once and create a custom gpx file with the waypoints and routes ready for export to your gps device or chart program.
As an added bonus, Latitude and Longitude can be entered in almost any format, even both in one input box, for ease of copy and paste entry.
Latitude Longitude ConverterConvert between different latitude and longitude formats. Then copy and past the converted format into other programs. This program will take most any format as input and outputs the result in five different popular formats.
Gross Fine Mainblock Reeving
|Two ways of reeving the mainsheet in this gross fine mainsheet system are shown. The more obvious way to do it is shown on the right. The problem is that the lines hit each other, the fine control blocks hit the main sheet, and in general it has problems. The other way rotates the main dual block by 90 degrees and has no such interference issues. It also opens up a large space for the fine tackle so that it does not rub on the mainsheet.|
Soft Line Shackle on a Block
A Better Soft ShackleRevised 12/12/2011 -- added calculator
I make and use a lot of soft shackles to attach my jib sheets. The normal soft shackle is rather difficult to open and to milk closed. With age, it gets every more difficult to use. The alterniative Kohlhoff style looks a bit insecure although under load it is perfectly secure. This version is a bit of a hybrid with hopefully the best properties of both. The eye is easy to open but can only be opened just enough to fit the stopper knot through it. Almost any slight force will close it quickly. The basic construction is a passthrough eye, a shackle section of about 2 inches, a passthrough lock and then a bury of the other strand into a body section of about 5 1/2 inches, another passthrough and finally a diamond knot.
Finding Target Boat Speed to Windward
How do we get to the mark fast?When sailing toward the windward mark I always wondered, should I point high, or should I fall off a little for more speed. Some boats are blessed with instruments that give them these answers. They know how high to point and how fast to go to get them to the mark quickly. My boat is simple. I have a hand held wind meter, a knot meter, and a masthead fly. How can I know what the best point of sail is?
- SSH and FTP from your phone to embedded processor
- How to Tie a Bowline (fast and easy)
- GPS NMEA Plugin for Android
- StartLine Video Series
- Unassisted Mast Climbing
- Race Committee Timer with sound
- Knife Review - One year later
- Unassisted Mast Climbing Update
- Racing with a Whisker Pole
- Hybrid Soft Halyard Shackle
- Block Mechanical Advantage
- Analysis of A Tack (using GPS)
- Small Things Big Wins
- Knives on a Boat
- Boating Electrical ABCs
- Basics of Sailboat Raceing
- Velocity Headers
- Unassisted Mast Climbing
- How to Fly a Spinnaker
- How to Point Higher
- More Low Friction Rings
- Fairlead Friction Explained
- Jibsheet Fairlead
- Mainsheet System Analyzed
- More on Rings as Twings, Inhaulers, and Twings
- Calibrate a Marine Compass
- Low Friction Ring Mechanical Advantage
- Make your own Telltails
- GPX CSV Waypoint Editor and File Converter
- Buying New Sails
- Bluetooth GPS Receivers
- Almost Lost My Rig
- Rock Box Blue -- First Look
- Buying Used Sails
- Phone or Tablet On Board
- Starting Apps
- No Shackle Halyard
- Vang Systems
- Evantide Sails Again
- Easy GPS Waypoints and Routes Creation
- Gross Fine Mainblock Reeving
- Finding Target Boat Speed to Windward
- Bonding Sinks Boat
- Calibrating your Knot Meter
- Printing your own NOAA Charts
- Repowering your Sailboat
- Amsteel to StaSet Splice
- Jib Twing
- Bonding your boat
- Lightning on a Sailboat
- Humidity Below Deck
- Low cost High Tech Halyard
- Mainsheet Systems
- Rig Tuning
- Loos gauge accuracy
- Foot Block Wedge
- Replacing Cockpit Drains
- The San Francisco Bar
- Tuning the rigging
- Boat of the Month (L-36)
- Chariman Bob's list of concerns about L-36s
- From Odin Braathen
- Swiftsure (1959-1970)
- L-36 Class History
- Remembering Bill Lapworth
- Remembering Chairman Bob
- What is the handicap of an L-36?
- Inspecting Wood Boats
- Cockpit Repair
- Repairing cabin top leak on Papoose
- Repairing a pulled up rail track
- Wood Boom Repair
- Wood Screws
- Pilot Holes
- Machine screws
- Screw Heads
- Screw Length
- Hex Bolts
- Wrench Size
- Knots, Splices, and Rope Work
- Diamond Knot.
- Block Systems
- Loos PT Gauges
- Breaking Strength
- Knot Break Strength vs Rope Break Strength
- Line Selection guide
- Jibsheet Load Calculator
- Twine Size
- Fraction equivalent
- Table of Daylight Savings Time
- Find the Latitude and Longitude
- Marine Zone
More ArticlesFirst page 2 page 3 page 4 page 5 page 6 Last
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.