The first time I sailed across the Pacific was in 1975. This is a much younger me in Nuku Hiva in the Marquesas.

Generous Marquesans gifts

We navigated with a sextant and a chronometer that we kept in a velvet-lined box. Paper charts and pencil. The only pieces of electronics gear on that 44-foot sailboat were a Heathkit home-built digital depth sounder and a battery-operated multi-band short wave receiver. No radio, no refrigeration, and for entertainment, we usually read books by the light of a Coleman lantern.

My, how things have changed in 45 years.

While I’m really glad I got the opportunity to experience those early days of cruising, I have never longed to go back to the “good old days.”  Rather, most of my life I have been an early adopter of technology, from Loran to Sat-Nav, to GPS, to computer navigation, to iPads and navigation apps. So it just seemed right when Wayne was finding himself a bit overwhelmed with the work of ordering equipment and overseeing the build, and not finding enough time to work on our beloved Mr. Gee, that the job I could most likely help out with was in the area of electronics and networking. So I dove in to the deep end of the research pool and quickly found myself over my head. But, hey, I find it really exciting to learn new stuff, and that’s a huge part of what this building Möbius  is all about for us.

Over the next few weeks and months, I hope to write several blog posts covering my journey of learning and decisions we have made about our various networks, from NMEA 2000 to ethernet, to our Victron smart management system of our batteries, chargers and solar panels. Today, I’m going to start with our decision to go all-in on PCs.

Multifunction display chart plotters, or MFD’s have become the standard on most recreational boats. When I met Wayne, he had a single Raymarine E7 chart plotter on Learnativity, the boat we sold before starting this project. He had fitted that boat out 15 years before, upgrading the original electronics. Then he upgraded again many miles later when that plotter failed. Each time, it was rip out the old and stick in new hardware.

Today’s multifunction chart plotters show radar, AIS targets, depth, fish finder graphs, sonar, and night vision cameras. Some interact with the boat’s stereo system, can switch to internet browsing, and even take control of the boat’s drones! They are amazing, but essentially, they are closed black boxes that need to get sent back to the manufacturer for repairs.

As versatile as today’s MFD’s are, there is still much they cannot do. You cannot install any other software on them. At the very least, we knew that we wanted to have a pretty big and complex Maretron monitoring system on the boat, and we would need to run N2K View software. Plus, we wanted a permanent ship’s entertainment system with all our collection of photos, music and video on a Synology NAS hard drive system. We were going to need a ship’s computer anyway.

So then we started to look at the navigation equipment we wanted to use because that would, in part, drive our decision as to the navigation software we would use. Early on, we made the decision to go with Furuno for most of our electronics on the new boat. We started with what radar we wanted and Furuno won on that count, and their customer service is very good, their equipment extremely robust. So initially, we were looking at Furuno MFDs.

But one of the problems we faced was that we wanted lots of screens to see all those different systems all the time at two different helms. And given that we both wear glasses and are not getting any younger, we wanted decent-sized screens. Each MFD chart plotter has a powerful computer inside. These days most manufacturers also sell Black Box chart plotters allowing customers to connect them to their own monitors, but the Furuno TZT2BB while it has two Windows computers inside, only allows two monitors. And the 15” TZT2 MFDs we were looking at started at an MSRP of over $5000.00 each.

In the end the main reasons we decided to forego MFDs and go as a strictly PC boat were:

1. Cost

2. Upgradability

3. Versatility

Another thing we liked about Furuno was the fact that their navigation software that runs on Furuno MFDs is also available from Maxsea Nobeltec for PCs. Today, the program is called TimeZero, and while Furuno licenses the software for their MFDs, we can also run it on a Windows 10 computer. We considered OpenCpn, a free, open-source navigation application, but we read too many posts about people having the application crash, and it only will work with some radars, not all. When we investigated the TimeZero software, we were sold. The interface is beautiful and it works with Furuno radars. TimeZero comes in two version, Navigator and Professional, and while it’s not cheap, we decided to go with the Pro for all the extras, and we bought two licenses for just over $2000.00. Yeah, ouch.

Our first plan was to have our two computers be a permanent ship’s computer and then Wayne’s laptop would stand in for the second. It would give us redundancy, and we could do planning on the laptop.

Then I went on the forums and started to research computers. There is the Trawler Forum, the Cruisers and Sailing Forum, the Facebook Group TimeZero Navigation Software User’s Group, and the Furuno Community Forum. There are also lots of blogs we have mentioned previously as our favorites. I searched and read as much as I could, and of course, there was lots of disagreement.

Some folks are adamant that the ship should have a navigation computer with no other software on it, while others use theirs to navigate AND watch movies and check email, and they’ve been doing it for years.

Some swore by powerful machines, while others were happy to run OpenCPN on Raspberry Pi computers. Some said they would never trust a home-built, hack-job, while others said that nearly everything on their boats was DIY so they could fix it when it died. Some said you could buy a computer, but you’d save lots of money if you built it yourself.

When I talked to a Furuno rep about what specs they would like to see in a computer to best run TZ, I was told, “Our standard currently is an I7 CPU, 8/16 GB ram, gtx1060/1070, and a 250gb solid state HDD.”

In the end, I decided to do a bit of all of it. We will have two ship’s computers – in addition to our laptops. For the skybridge, we will buy a fanless industrial computer that will be kept pure as a ship’s computer and will run only TimeZero and N2K View. On the more powerful one at the main helm, we will not worry about contamination, and we’ll run whatever software we want. It will be our entertainment center as well. And this Apple fangirl decided I would build this Windows 10 box myself. While you can run TZ on older i7 processors, I didn’t want our system to lag while outputting to multiple monitors and running the graphics intensive charting software. So, I decided to spend the money on the 9th generation Intel processor in part because it can support up to 4 monitors, and that is what we have planned for the lower main helm: two 15” monitors at the helm, one 43” monitor to port and a 49” TV to starboard. TimeZero Pro only supports three “workspaces,” but we will want a permanent display for Maretron N2K View.

I really enjoyed the learning for the build process. I made heavy use of the website PC Parts Picker, and I started reading the forums where the gaming guys talk shop. I built this back in December 2019, and I decided to pay for a newly released processor so we could get some years out of it. When I opted for the “small form factor,” I thought it would be smaller than it is, but it doesn’t really matter. We have room on the boat for a full-size tower.

Here’s the parts list for my final build:

Intel Core i7-9700 Coffee Lake 8-Core 3.0 GHz (4.7 GHz Turbo) processor $349.99

Noctua NH-U12S – Premium CPU Cooler with NF-F12 120mm Fan   $59.95

Fractal Design Define Mini C MicroATX Mid Tower Case.  $79.99

Corsair Vengeance LPX 16 GB (2x8GB) DDR4 DRAM 3200MHz Memory kit  $74.99

MSI MPG Z390M Micro ATX Motherboard  $155.00

MSI Gaming GEForce GTX 1660 Ventus XS 6G OC Graphics Card  $227.99

Crucial P1 1TB M.2-2280 NVME Solid State Drive.  $99.00

Fractal Design Dynamic X2 GP-12 120mm  Computer Case Fan  $15.99

CORSAIR TX-M Series TX550M CP-9020133-NA 550W ATX12V Semi-Modular Power Supply.  $89.99

Windows 10 Pro     $129.00

Total price: $1281.89 

IMG 0207

As you can see in the photo above, I’m not sure how they get away with calling this a MicroATX Mid Tower. For someone who is used to laptops, this thing looks huge. And when I compare this to what you can buy that is similar in power and design, I’m not convinced I saved much money. But the big advantage I feel is that I learned so much, and as time goes on, I can easily increase the RAM if necessary, add a more powerful graphics card, or switch the built-in power supply from 110 to 24 volts. In the photo, you can see it is running on an AC converter since we are in Turkey with 240V and the computer currently runs on 110V.  The 24V power supply I looked at was $330, and since we don’t have the batteries hooked up yet, I went with AC for now so I could actually tell if my creation worked and start up the learning curve on Time Zero Pro. Perhaps I will pop for the other power supply in the future.


This Mid Tower computer will reside in the cabinet on the port side of the main helm behind the TV in the main salon. You can see that cavernous area on the far left of the photo above. The TV will be mounted on a swinging door that can be opened to access the air handler and the computer, as well as other networking bits and pieces.

Here’s the sort of computer we intend to buy for our second computer:

Fanless PC Industrial Mini PC Windows 10 Pro 16GB RAM / 512GB SSD Intel Whiskey Lake i7-8565u, TDP 15W8M Cache, up to 4.60 GHz, Quad Core 8 threads Desktop  Computer with HDMI/TPC/EDP Ports, M.2 WiFi, BT 4.0, 4K HD, RS232 / 485 COM, SATA 3.0 for 2.5 Inch HDD/SSD

Total price on Amazon: $917.00

Screen Shot 2020 03 08 at 6 23 18 PM

And the size is quite different! It has an 8th generation Intel Processor, so it will still support three monitors, but that does push the price up. At the moment, we only intend to have two monitors at the upper helm, but it is nice to know we will have room to grow. Screen Shot 2020 03 08 at 6 24 54 PM

Also, these are just basically Intel NUC computers, so I know they are expandable in terms of adding a larger SSD or more RAM.

This one will go into a cabinet that is just to port as you go down the steps into the main salon. Both computers will have dual LAN ports. Furuno is fussy about insisting that their hardware needs to be on its own isolated network. We will have a FAR 1523 radar, BBD-S1 bottom discriminating depth sounder, and the Axis camera encoder for our FLIR camera, as well as some exterior cameras on that network. All the wifi, additional cameras, Synology NAS, and other non-Furuno stuff will be on the other network.

For monitors, after a fair amount of research, we chose Litemax Navpixel marine displays. At first, I searched and searched for regular monitors, but since we only had room for two 19” displays at the lower helm, the choices were few. We didn’t really need the waterproof aspect, but I wanted them to be able to dim almost to black easily, preferably with a hard knob, and I wanted them sunlight readable, even for inside. We have so much glass in our salon, and our eyes aren’t getting any younger. By going direct to the supplier in Taiwan, we were able to get two 19” displays, two 24” displays, and one regular non-waterproof 43” monitor for about $8000.00 including shipping.

Screenshot 2020 03 08 19 11 19

This is a photo of one of the 24” monitors from Litemax. This is a full multi-touch,1920×1080,1000 nits sunlight readable, IP65 sunlight readable Marine Display.

One 19” TZT3 ChartPlotter sells for $8,495.00. To be fair, that includes the sounder, and we will have to buy the sounder module ($500) for our TimeZero software.

In addition to the TimeZero software, we will also have Rose Point Coastal Explorer software. We will have CS on our laptops for planning purposes, and for back-up in case we lose both of the ship’s computers. In addition, we have tablets and phones. For redundancy and back-up, we feel we are covered.

In the end, we won’t know until we get out there, but we’re both pretty happy with our decision to make Möbius an all-PC boat.

We will carry very few paper charts, just a few large area ocean charts, but we will have paper pilot charts. And in the event we lose all electricity, we both have sextants, a copy of the tables, and a nautical almanac on Kindle (with a tiny portable solar panel).

If I have to break out the sextant, I think it will be just like riding a bike.

Stay safe and healthy everyone. We’re on a long passage with this Pandemic, but as Wayne and I always say to each other when things blow up on us — This too shall pass.

Fair winds,