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Dog in the Doghouse
Sun Apr 12 17:10:44 EDT 2015, Puerto Montt, Chile

This is my friend's Carlos & Marlene's dog. If the door was closed, the step where the dog's front paws are is where a person can sit and look out when offshore in unpleasant weather. There is glass (polycarbonate) all around (not shown in this picture), so good visibility, and that area where one sits and looks out from is called the doghouse.

Puerto Montt
Sat Apr 4 8:10:45 EDT 2015, Puerto Montt, Chile

This is a traditional type of sailboat, Lancha Vela, from the Chiloe area. This one has been put into a park in central Puerto Montt.

Sun Apr 12 8:43:27 EDT 2015 | ralitsa
Are these still in use there, or afloat?
Sun Apr 12 9:42:36 EDT 2015 | Richard Hudson
I've seen one sailing around from a distance. I don't think they are still used for fishing from, but I"m not sure.
Puerto Montt
Thu Mar 26 11:00:58 EDT 2015, Puerto Montt, Chile

The shore, from the central area of Puerto Montt

Puerto Montt
Fri Mar 20 15:12:58 EDT 2015, Puerto Montt, Chile

Puerto Montt is a city of about 220,000 people. It is a major transportation hub for the fishing and fish-farming industries. Cruise ships also visit.

The tourist guidebook I have pretty much says that Puerto Montt has a bus terminal that allows you to get to more interesting places, and suggests going directly to the bus terminal. However, Puerto Montt also has some interesting sights, and a pretty harbor. For sailors, the city is also a good place to buy things and get stuff done.

Mon Mar 23 9:09:08 EDT 2015 | george ray
Hope you will add your observations to noonsite dot com. The Puerto Montt section has only one recent addition and it questions the accuracy of some of the info on the Puerto Montt page. Your breadth and depth of experiance makes your observations particularly valuable.
Thu Mar 26 10:57:29 EDT 2015 | Richard Hudson
Thanks for that suggestion, George, I'm starting to add comments to the page now.
Wed Mar 11 17:05:46 EDT 2015, Seno Reloncavi

Sat Mar 14 12:03:37 EDT 2015 | Ralitsa
Heading to the Dream :)
Sat Mar 14 16:26:45 EDT 2015 | Alia
Hey Richard, Happy sails to you my most adventurous cousin.

Thinking of you and wishing you all the best. Love, Alia
Navigation Computer (technical post)
Sat Mar 7 8:43:46 EST 2015

I navigate by a combination of paper charts and chartplotting on a computer, depending on where I am and what charts I have. Along coasts and in harbors, electronic charts are really nice to have--letting you know at a glance where you are--not requiring you to determine and then plot your position. Offshore, paper charts are far nicer to work with than electronic charts, because you can see the big picture easily and things like isolated islands and reefs are shown on small-scale (overview) charts (on electronic charts, these may not be shown at all zoom settings, so they can be missed).

Previously, I've used laptop computers (connected to the ship's GPS) to run chartplotting software (mostly the excellent, open-source OpenCPN software), and slept the computer whenever I wasn't looking at it (to save power). That worked fairly well, but involved a delay between waking up the computer and having the position update, and laptops still use a fair amount of power, and all the ones that I had ran on 19-22VDC, which I could only get by converting the ships power (24VDC) to 110VAC, and then using the laptop's power adapter to convert to 19-22VDC (each conversion wastes power, so this was inefficient).

Since LED displays have become inexpensive and pretty power-efficient, I wanted to try using a low-powered computer to run the plotter software, and turn the display on and off whenever I wanted to look at it. This would give me a big display (much easier to navigate with a big display) without using a lot of power, and allowing the navigation computer to be left on (rather than slept), so the track (periodic log of positions) would be complete (not having gaps when the computer was sleeping).

After looking at a youtube video of OpenCPN running on a Raspberry Pi computer (very low power, very popular single-board computer), I thought I needed something that was faster. I bought a Utilite computer with a 16GB SSD that has an ARM processor, an HDMI output and should only use 9 watts of power at 12VDC. I bought a 20" LED display which runs on 14.4VDC (it came with an external power adapter that converts 110VAC to 14.4VDC). I am running both the display and the Utilite computer from a 24 to 12 volt DC converter (so there is only one voltage conversion--less inefficient than converting voltages twice), which actually puts out 13.8VDC.

I built a wooden frame to hold the display and the computer. The frame is bolted down to the chart table with one bolt so it can be turned to allow watching movies when seated at the table. Clear acrylic on the front keeps spray away (it has to be quite rough to get spray down below, but that does sometimes happen), and can be lifted up to access the display controls on the front of the display.

The Utilite computer and keyboard are attached to the back of the display (the keyboard is rarely needed--OpenCPN does what I need using a mouse for almost everything). In front of the display in the picture is the paper logbook (there are way too many ways for computers, power and wiring to fail in salty, humid, bouncy environments to not want to have a paper record of a fairly recent position).

The Utilite has an ARM processor, so software has to be compiled on it (or for it)--binary distributions are not available for much other than the operating system (Ubuntu Linux 12.04) itself. I've been running OpenCPN Beta Version 3.3.1731 (the latest beta version at the time I put the system together).

How well does the system work? This has been my primary navigation computer for nine months, during which we've traveled over 8,000 miles. Performance is slow--annoyingly slow at first, but people get used to it (I sail with different crew at different times, so several people have used it), and it is usable.

The Utilite has no internal fan and runs very hot (the case gets hot to touch, which the manufacturer says is ok). At first, I had problems with hangs that required power-cycling the Utilite to get it running again. I worked around that with daily reboots for a while, then wired in a small 24VDC fan (running on 12VDC power, so slower speed & less power consumption) blowing air across the case. With the external fan, the computer has run reliably for several weeks with no hangs, reboots or powercycles, and I have not seen the case temperature go above 38 degrees C.

There are some problems with zooming into some levels of charts, but they are easily worked around by restarting OpenCPN (I assumed this was a problem with the beta version and haven't tried to do anything about it yet--when cruising I rarely have an internet connection, don't want to mess with what works well enough).

On the whole, the system works pretty well, has low power consumption (the original goal), and has a much nicer display than a laptop. I'm content with it. I am planning to update the OpenCPN version (there is no update for the operating system yet).

Compared to a really good navigation system like Navigatrix ( -- a ready-to-use version of linux that can run from a USB stick on most laptops which includes a great variety of useful tools for navigators), my system is pretty basic (because I only compiled what I needed to get OpenCPN operational). Due to the amount of learning that would be required to compile the software, I would not recommend doing what I did to anyone not already very familiar with linux and make.

Why am I so concerned about power consumption? For electrical power, Issuma has alternators on the engine, solar panels, a wind generator and a portable gasoline generator. While that is a lot of ways to generate electricity, the solar panels only work when the sun is on them and no part of them is shaded, the wind generator only puts out significant power in moderate to strong winds, the engine does not get run simply to charge the batteries (the light load that the alternators alone represent is bad for the engine--all the fuel doesn't burn at very light loads so it washes oil off the cylinder walls), and the gasoline generator is noisy, so I don't run it often.

As a result, I'm very conscious of conserving electricity--all lights are LED, there is no refrigeration (or air conditioning), cooking is by gas (propane/butane), heating is by diesel and wood, and computer use is limited.

Sat Mar 7 20:24:09 EST 2015 | George Ray
What a great nav-computer. You are very resourceful and thrifty.
Wed Mar 11 18:57:53 EDT 2015 | Jocelyn
This is a great article. Thank you for those technical details.
Wed Apr 8 9:43:56 EDT 2015 | Dani newcomer
So handy and resourceful from you dude.
Can't wait to see it.
Navigation Computer (see above)
Sat Mar 7 6:20:12 EST 2015

The back of the navigation computer. See above post.

Smoky Dawn
Wed Mar 4 16:39:10 EST 2015, 41 29.5'S;72 59'W

There have been a lot of forest fires lately here. If there is no wind, the smoke often doesn't blow away, and makes a haze over the water.

It rained the other day--the first rain since I've arrived--and that seems to have helped put out the forest fires.

Canal Tenglo Sunset
Sat Feb 28 6:58:54 EST 2015

Mon Mar 2 20:54:22 EST 2015 | Jocelyn
Tue Mar 3 9:15:29 EST 2015 | Paul Gray
Just beautiful Richard!
Wed Mar 4 16:33:58 EST 2015 | Richard Hudson
Thanks, Jocelyn and Paul.
Canal Tenglo
Fri Feb 27 6:56:36 EST 2015

With a large tidal range, boats frequently take to the beach.

Tue Mar 3 14:15:33 EST 2015 | Ralitsa
Adorable! And somewhat strange with the houses so close to the water. :)
Wed Mar 4 16:35:35 EST 2015 | Richard Hudson
Thanks, Ralitsa. I think everyone living in those houses close to the water is involved in fishing, so they want to be that close.
Sat Mar 7 15:08:49 EST 2015 | Ralitsa
Here we don't have tide (very small), but sea, when stormy, "eats" a lot of the shore, that's why it looks strange for me having the houses so close :) Perhaps this is the high tide there and in a closed bay?
Wed Mar 11 10:02:09 EDT 2015 | Richard Hudson
It is very protected, so there are big waves to eat at the shoreline. On a really high tide (over 7m) all those boats will be floating.
Wed Mar 11 10:02:40 EDT 2015 | Richard Hudson
That should read there are NO big waves to eat at the shore

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