Navroc Marine Electronics

Navroc Marine Electronics We provide service and sales of marine GPS, chart plotters, radar, fish finders, navigation computer

NAVROC Marine Electronics is a division of Rockbound Computer. NAVROC provide service and sales of marine GPS, chart plotters, radars, fishfinders & sonar, computer navigation systems, and communications equipment. NAVROC, a division of Rockbound, has been building and servicing marine computers for ten years for fishing and navigation. We make marine computers for AC or DC power systems that work

with the equipment we service. Local fishermen quietly appreciate the efficiency and understanding gained by making the different marine systems work together. Marine computers are a great way to make marine electronics and navigation easier to use for all boaters.

You bought a new VHF radio and it's complaining it does not have position? You have two options when buying a VHF radio ...
05/19/2026

You bought a new VHF radio and it's complaining it does not have position? You have two options when buying a VHF radio these days.. .Spend a few extra and get the one with built in GPS and you're good. Spend a few less and get the one that needs to be wired up to GPS. This can be the more costly option....

This radio has two easy ways... You can get a GPS antenna that plugs into the little connection on the left. Those are typically $50-$150. On the right is a 5-pin NMEA2000 connection. If you're one of our customers with a sat compass on a well equipped boat, you might be able to plug it into the NMEA2000 network with a $30-$60 NMEA2000 cable which we sell and be in business. Radios might also have NMEA0183 wires which requires hardwiring it to a plotter or GPS instrument; this typically requires cabling and onsite labor. New radios send position when a distress call is made. While most people won't get in trouble for not having position on their radio, things are moving in that direction to reduce false alerts and to provide efficient emergency response.

05/17/2026

A little work on a customer's Timezero system and some golden hour drone flying is much preferred over normal Saturday yard work.

A nice electronics setup seen this morning. Inside and outside displays  for TimeZero Navigation Software Professional a...
05/15/2026

A nice electronics setup seen this morning. Inside and outside displays for TimeZero Navigation Software Professional and Hondex plotter, and a Hondex sounder.. Jamie Thurlow installed it. I did the connection wizard / final test work. It's got our 15.6" screens on the left, 20" sceptre in the middle which we sell, and outside there is an older Hondex plotter and sounder feeding depth and position to TimeZero.

Helped a customer upgrade (add) to the newest TimeZero Navigation Software Professional. The old computer is about 15 ye...
05/06/2026

Helped a customer upgrade (add) to the newest TimeZero Navigation Software Professional. The old computer is about 15 years old and still runs MaxSea 12. We've fixed the old computer a couple of times, but don't want anyone depending on such an old machine. We were able to move marks and recorded bottom data to the new computer with a USB stick.

5000w/24v Victron Multiplus-II inverter for sale. It was new last year, installed on a boat and quickly found to be defe...
04/14/2026

5000w/24v Victron Multiplus-II inverter for sale. It was new last year, installed on a boat and quickly found to be defective from the factory within a week or two. I bought a replacement for my customer and sent this back to Victron. They replaced the main board and sent it back to me. We have tested it for a couple weeks in the shop and have confidence. New with the optional USB configuration device is $1800-2000. I'll sell it for $1300 with a year warranty. We can help install it if needed as well. This would be awesome upgrade for a boat with 24v. Run kitchen appliances and power tools with performance to spare.

Just in case you're after a new Furuno Marine Electronics MFD, they have updated their products and naming recently. Abo...
03/30/2026

Just in case you're after a new Furuno Marine Electronics MFD, they have updated their products and naming recently. About two years ago, TZTouchXL became the model succeeding TZtouch3, which of course replaces the TZtouch2. They've since added to the family TZtouchE which has most of the XL features and charts and no physical controls; all touch screen. A step down from that is the TZMap models; these have the same interface and charts, but lesser radar compatibility and no networking. It might be a good option for a simple setup. If you want to network with our PCs and TimeZero Navigation Software, the TZtouchE and TZtouchXL share network sounders, radar, user data nicely. A recent Timezero pro update added compatibility for the TZtouchE. As always, we can listen to your needs and get exactly the right items for you.

Making room for a 2nd radar! On this boat we moved the sat compass from the stand to the roof. Journey's End Marina weld...
03/20/2026

Making room for a 2nd radar! On this boat we moved the sat compass from the stand to the roof. Journey's End Marina welders added to the stand to get the new radar at the perfect height above the other small antennas. Then the new radar dome went on after their work was done. When the boat was back in the water, I visited to align the radar and sat compass for perfect radar overlay. I noticed that this boat was among a majority of work boats tied to nearby floats with dual radars. If you're building or modifying a stand, be mindful that small antennas like GPS and satellite should be a different height than the radar(s). LED flood/spot lights should be mounted as far away from antennas as practical; a different height is ideal. While we made do here with a cable clam to bring the wires in, a generously sized weatherhead/snorkel/gooseneck pipe for wires is my favorite way to get wires in.

03/10/2026

I'll be in Deer Isle / Stonington Wednesday 3/11 with some extra time after lunch if needed. Call the shop to get on the calendar.

A busy day at the fishermen's forum! I'll be here tomorrow (Saturday) as well. Showing off some 3d printed items and hel...
03/06/2026

A busy day at the fishermen's forum! I'll be here tomorrow (Saturday) as well. Showing off some 3d printed items and helping people with Timezero/Olex/Hondex. Discounts on scx20 sat compass setups, Discounts on a Sitex/Koden radar if you ask about it at the forum.

Three radar projects happening! We like Furuno and Si-Tex/Koden for radar. The first radar is a Furuno NXT dome for use ...
02/24/2026

Three radar projects happening! We like Furuno and Si-Tex/Koden for radar. The first radar is a Furuno NXT dome for use with TimeZero. The middle radar is a Koden dome which makes for a very nice stand-alone radar. The third is a Furuno open array that needed a repair; a nice stand-alone radar of their previous design.

Address

156 New County Road
Rockland, ME
04841

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+12075967803

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