The giant to-do list is now here.

http://www.dba.dk/31-fods-havkrydser/id-72263946/
http://smhavn.dk/con24.php4
http://iw31.blogspot.com
http://www.stormy-iw31.eu/7572/
http://www.stormy-iw31.eu/5881/
http://www.iw31.de/bilder/index.html
http://sy-juliette.de/
http://www.halse.de/
http://sparkmanstephens.blogspot.com/2011/02/design-1899-iw-31-class.html
http://mermaidscheveningen.webklik.nl/page/ontwerp
http://www.iw31-wismar.de/
http://www.iw31.dk/
http://www.iwrig.com/57718625
http://eskapad.wordpress.com/
http://mermaidscheveningen.webklik.nl/page/ontwerp
http://www.klassiekepolyesterjachten.nl/page/OverOns
http://sailboatdata.com/viewrecord.asp?class_id=5505
http://www.s-and-s-association.org/
http://www.sparkmanstephens.info/doc/5702458zUBmMLGktd9U2RAC4CT7yqTe9.pdf
http://www.hinnerk-weiler.de/
http://www.youtube.com/hinnerkWeiler
http://www.youtube.com/user/ottorino43 (commented on a video that he owns an IW 31)
http://www.youtube.com/user/essen222 (commented on a video that he owns an IW 31)
https://picasaweb.google.com/116970321897372292619/IW31Havskum#

http://www.gotakanal.se/sv/Gotakanal/
http://www.skipperguide.de/wiki/Hallands_Väderö

Bronze equipment (from the U.S.) they have a bronze chain-cover, bronze bow-roller, and an awesome “mid-rail” chock that has a cleat in the center (just realized we can't do the mid-rail chock because the genoa car track is over the center of the rail):
http://spartanmarine.com/catalog.html

Also bronze cast parts from Port Townsend Foundry:
http://www.porttownsendfoundry.com/

There's also casting one from scratch: http://students.washington.edu/sailing/telltale/fall2000/bronze.html

Volvo parts:
http://www.marinepartseurope.com/en/volvo-penta-explodedview-7726000-30-11707.aspx

Acrylic/Windows:
http://plastbutikken.dk/produkter/27-akryl-plexiglas/

Other bronze hardware: http://www.toplicht.de/en/shop/decksbeschlaege/schiene-und-rutscher/wilmex-decksschienen-und-rutscher/spinnaker-rutscher-wilmex

http://www.bengco.co.uk/
http://www.sigmarine.com/manuals/SIG%20Solid%20Fuel%20Heater%20Manual%202011-2.pdf
http://www.peluke.com/Site/Fireplaces.html
http://www.pascallatkey.co.uk

http://www.refleks-olieovne.dk/default.asp?PageNumber=3460
http://www.refleks-olieovne.dk/default.asp?PageNumber=3456
http://www.dickinsonmarine.com/dheaters.php

http://www.samphireseastoves.co.uk/

Original sales materials: iw_31_brochure.zip

• mast length is 12.5m

Things I'd like to have are:

TI bq2050 single-wire serial output IC
DW2438 based monitor
Someone's nice Arduino based with Hall-effect current sensor
cheap-o off-the-shelf model
Expensive Maretron NMEA 2000 model with current sensor
Hall-effect sensor chip

This one is a wind speed & current sensor for a wind generator, but has aspects useful for battery/power monitoring:
Wind generator speed sensor

I already have an NMEA 0183 output smart depth transducer, but could I convert the output to NMEA 2000?

NMEA 2000 is based on the CAN bus spec, at 250khz transmission rate. Sparkfun has CAN bus Arduino shields, which I've ordered and will attempt to reverse engineer the NMEA 2000 messages with. The bus contains two wires for power, and two for serial data. It's terminated with 120 ohm resistors, so it should look like 60 ohms to a meter. More info:

Controller_area_network
CAN info from the CiA
J1939 message format notes from the CiA

I have a couple of NMEA 2000 instruments now, but my plotter is older and not NMEA 2000 capable. That makes cabling the old stuff still a little painful- however, not if one powers known to be low-powered devices off the NMEA 2000 bus by using a field-installable male connector with only power connections wired. I tested with my 3005c plotter, old NMEA 0183 17HVS antenna, and don't see any issue with this arrangement. If there's an issue with the device, like there could be with a 2000 device, you can always disconnect it to isolate it from the bus.

Normal NMEA 2000 connectors: can't remember the part number Smaller NMEA 2000 connectors: http://www.molex.com/molex/products/datasheet.jsp?part=active/0848549318_FIELD_ATTACHABLE.xml&channel=Products&Lang=en-US

Notes & Links