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

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

volvo instrument panel parts:

Volvo Penta Exploded view / schematic INSTRUMENT PANEL 12V
2001, 2001B

#	Description	PartNo.	Qty	Price (DKK)
1	Instrument Panel 	859057	1 	 Out of production	
 	WHITE COLOURED DECOR STRIPE.
 	Replaced by:
 	Plastplugg	858648	1 	 101,00	
 	Instrumentpanel	873594	1 	 4 881,25	
2	Instrument Panel 	872798	1 	 435,00	
3	Closure 	858648	1 	 101,00	
4	Button 	843684	1 	 647,50	
5	Rubber cap 	837533	1 	 77,63	
6	Protecting casing 	858795	1 	 31,88	
7	Buzzer 	828587	1 	 742,50	
8	Toggle switch 	828584	1 	 320,00	
 	Alarm
8	Toggle switch 	828585	1 	 115,00	
 	LIGHTING
9	Nut 	828586	2 	 155,00	
10	Symbol strip 	858645	1 	 213,75	
11	Electronic unit 	873737	1 	 2 310,00	
12	Bulb 	19923	3 	 11,75	
13	Reflector 	828784	1 	 181,25	
14	Cross recessed screw 	941615	2 	 17,88	
15	Spring washer 	941904	2 	 0,33	
16	Cross recessed screw 	949947	1 	 1,03	
17	Spring washer 	941904	1 	 0,33	
18	Screw 	828647	4 	 11,25	
19	Cable block 	859037	1 	 1 440,00	
19	CABLES AND TERMINALS 	

https://www.marinestore.nl/Navigatie_Stuurkompassen/c216_222/p2000001482/Danforth/Constellation_C561_HA/product_info.html https://www.marinestore.nl/Navigatie_Stuurkompassen/c216_222/index.html

Thinking about anemometers with no moving parts- it may be possible to use a cheap pressure sensor as a pitot tube, with a 360 degree cowling that funnels horizontal moving air upwards into the sensor (picture two smooth funnels inserted into each other). An apparently cheap & suitable sensor for Arduino is: http://www.coolcomponents.co.uk/catalog/product_info.php?cPath=36_68&products_id=739 Coupled with a GPS chip to get SOG & COG, apparent and real wind speed could be directly output in NMEA0183 format. Add wind direction and done.

Pricey, but likely very useful: http://www.liquidware.com/shop/show/TSL/TouchShield+Slide

There's also: http://www.watterott.net/projects/s65-shield - but no touch. Available at http://www.watterott.com

And the 4D http://www.youtube.com/watch?v=Z-Cf681Qurw&feature=related available here (they also have an air pressure sensor): http://www.coolcomponents.co.uk/catalog/product_info.php?cPath=45_72&products_id=676

http://www.youtube.com/watch?v=qWVA3klDIkg&feature=related http://robotsat.blogspot.com/2010/06/okay-how-about-video.html

With a GPS sensor, can get time & speed, with the speed and wind direction & wind speed, should be able to output real wind & apparent wind speeds and direction from the single anemometer sensor already mounted.

This guy has a lot of info: https://sites.google.com/site/vilorei/index/arduino—serialgpsunit

Another possibility is hacking an Archos 5 or 7, since they run linux it should be possible to code normal apps for display- the issue is input, there's only one serial port, so some kind of NMEA multiplexer & converter to ethernet or USB might be better. They come with GPS and accelerometers and all kinds of capabilities built-in.

There's also Android based hardware, http://antipastohw.blogspot.com/

http://www.haidartechnology.com/uploads/SEG-CQ57-xxxREV1.10_Hardware_Manual.pdf

http://matrixmariner.com/arduino_compass

http://www.polarnavy.com/main/prod2

http://dk.mouser.com:80/Circuit-Protection/Circuit-Breakers/_/N-u7f4?P=1yzu25aZ1z0s76mZ1z0s759Z1yzub35Z1z0z812Z1yzulet&Keyword=10+amp+circuit+breaker&FS=True

Maybe a pitot tube can work accurately from 360 degrees? See below:

not suitable, but a good site: http://shop.moderndevice.com/products/wind-sensor

Another thought- light-sensing for wind speed & direction? In that case no POT or essentially any connection to moving parts would be necessary. The moving parts would simply need to be free to move, and “reading” them would be a matter of sensors. Maybe CDS's to sense the position of the vane and the flashes of anemometer cups moving by? A single white LED could be used for constant illumination.

http://www.maretron.com/products/wso100.php

Android based stuff: http://www.linuxfordevices.com/c/a/News/Androidbased-gadgets-to-ship-in-October/

Linux based media player: http://www.linuxfordevices.com/c/a/News/ZiiLabs-Zii-Egg-and-ZMS05/

http://www.linuxfordevices.com/c/a/Linux-For-Devices-Articles/Linux-PDAs-PMPs-PNDs-and-other-Handhelds/

http://pcinst.imolesworth.info/tiki-index.php?page=NMEA