![Simrad NAC-3 Autopilot Core Pack - NAC-3, Precision-9, RF25N & N2k Starter Kit [000-13336-001]](https://cdn.shopify.com/s/files/1/2785/3654/products/62225XL.jpg?v=1677975733)
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Description
Simrad NAC-3 Autopilot Core Pack - NAC-3, Precision-9, RF25N & N2k Starter Kit [000-13336-001]NAC 3 Autopilot Core Pack NAC 3, Precision 9, RF25N & N2k Starter Kit Comprising of the high current NAC 3 autopilot computer, Precision 9 compass, RF 25 rudder feedback unit & N2k Starter Kit. The NAC 3 Autopilot Computer is the brains behind your autopilot system. NAC 3 contains the control algorithms developed to helm a yacht across a broad range of weather conditions and sea states, alongside the electronics needed to operate a hydraulic or
NAC-3 Autopilot Core Pack - NAC-3, Precision-9, RF25N & N2k Starter Kit
Comprising of the high-current NAC-3 autopilot computer, Precision-9 compass, RF-25 rudder feedback unit & N2k Starter Kit.
The NAC-3 Autopilot Computer is the brains behind your autopilot system. NAC-3 contains the control algorithms developed to helm a yacht across a broad range of weather conditions and sea-states, alongside the electronics needed to operate a hydraulic or mechanical drive unit, while also interfacing with other components including heading sensors and rudder feedback units. The NAC-3 was designed for boats 10M (33') or greater in length and is rated to operate high-current hydraulic drives, mechanical drive units, and solenoid valves with a current rating of 30 Amps continuous (50 Amps peak).
Precision-9 Compass
The Precision-9 Compass. Outputs Heading (20 hZ), Rate Of Turn (20 hZ), roll, and pitch (10 hZ) over the NMEA 2000® network.
RF25N NMEA2000
RF25N, Rudder Feedback Unit: With transmission link and 5M (16.5') NMEA2000 Micro-C cable
N2k Backbone Starter Kit
NMEA 2000 Micro-C Network starter kit: Includes Network power cable, 4.5M (15') N2K cable, 3 x T-connectors, 2 x network terminators
Specifications:
- Temperature, operation: 0 to +55°C
- Temperature, storage: -32 to +70°C
- Protection: IPx7
- Weight in Kg: 0.7kg, 1.6lbs
- Dimmension Max size, mm (length x width x height): 211 x 196 x 65.5mm, 8.31" x 7,72" x 2.58"
- Mounting: Bulkhead
- Construction: Plastic
- Color: Black
- Cable inlet: Grommet (Spare Incl)
- Local Power supply: 12/24 V DC +10-30%
- NMEA 2000 Load Equivalent number (50mA): 1
- Reversible motor control of rudder: Max continious load 30A, peak 50A for 1s
- On/off solenoid control of rudder: 12/24V DC, common, load range 10mA to 10A, off current <1mA
- Engage output for bypass/clutch: 12/24V DC, min 10mA, max 3A
- Rudder angle, frequency input: 15V, 1.4 to 5kHz, resol. 20Hz/x OR NMEA2000
- NFU port/stbd input and mode indicator output: External open/close contact, common ret, contact current max 30mA
- Mode input: External open/close or pulse contact for SYSTEM SELECT, common ret, close to activate, contact current max 30mA
- External alarm output for buzzer/relay: Max 100mA, voltage level as local supply
- IEC 61162-1 input (NMEA0183 In): 1 ch
- IEC 61162-1 output (NMEA0183 Out): 1 ch
- IEC 61162-1 speed: 4.8 & 38.4 kbaud
- NMEA2000: Certified (pending)
Specifications:
- Steering Type: Hydraulic
- Box Dimensions: 14"H x 14"W x 18"L WT: 8.8 lbs
- UPC: 9420024155646
Owner's Manual (pdf)
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4.7 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
Comfortable and good quality
Color: Black
This is a great chair value. It’s easy to assemble, height adjustable, and comfortable to sit on. It has a good seat cushion and firm back support. I really recommend this product. And I just ordered another one for my wife’s sewing table because she tried to steal mine.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Inexpensive and decent, without any negative qualities.
Color: Black
Easy assembly with spare parts and the one important tool: the allen wrench that tightens those bolts. The instructions were clear and the parts well marked in the blister-package that is sturdy enough that cutting through the edges of the clear plastic bubbles to get at the parts with scissors is the best method to avoid having to chase the small parts when they fly out of the ruptured package. This chair uses the "New" kind of roller which is larger than the old ones and I was able to replace the standard tandem wheels with the super-slick roller blade type that are much faster and easier to maneuver. I'm sitting in the chair now as I type and it's very comfortable, even if the back isn't adjustable. The mesh back is much better for the Summer here (where it gets really hot!) and is more flexible than the basic upholstered chair back, so it fits and conforms. The one it replaced had been reworked several times and it was still too small with the back not correctly aligned, it had fallen apart anyway and was easier to throw away in small pieces.
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Reviewed in the United States on November 6, 2025
★★★★★ 4
Better Than Expected
Color: Black, Color: Black
Initial impressions: The chair is better quality than I expected. The seat material is nice: feels firm but soft; better than those seats with faux leather. So far, it is comfortable even for being over 200 lb and over 6 feet tall.
Many parts are sturdy metal, which is much better than plastic. The base that holds the wheels may be a form of plastic, but it is dense and feels strong; almost like metal.
The chair frame appears to be a firm plastic too, but not thin, so my initial thought is it will last. It has a buffed texture [not shiny or smooth -- which to me is nice, because it makes it look and feel more solid and not cheap.
The one weak point in design, in my opinion, is the cover that fits over the raising post: it feels a bit flimsy. Regardless, it probably wouldn't be noticeable to most unless they get down on the floor and squeeze it. Nevertheless, that there is a cover that raises and lowers like a telescope-- to "hide" the post, is a nice added attribute. A customer could leave the that cover off if they prefer, but I like it.
I appreciate that the casters stay in place (unlike the other chair I tested: the KK Toner Round Rolling Stool, whose wheels do not stay in place). This makes it possible to lift the chair without fear of dropping casters.
The casters are replaceable too, which is good. I was able to use Lifelong brand casters, instead, which are purportedly safe for hardwood and marble floors.
The seat is stationary once attached. It is mostly upright [not leaning back]. Even with its mesh backing it is firm. This is not a plush, rocking chair type of product, yet it is comfortable.
Instructions: As seems to be the new trend, they were mostly pictures without words. Regardless, putting the chair together was quite easy. Just make sure you doube check the front versus back of the seat -- this is important for setting the metal lift connector in place. And, don't forget to put the holding ring and washer on the screws.
They add an extra screw for the connector, and an extra screw, washer, and pressure ring for the back attachment. That was a pleasant surprise; and is appreciated.
The raising and lowering mechanism works well. You can sit on the chair while lowering it; it seems best to get off the chair while raiding it.
It lowers to where the seat is 28 inches off the floor. It rises to 22.5".
The seat is 17.5" wide x 16.25" front to back [the assembled chair is 18.5" front to back]. The back rest top to the floor is 34". The wheel base is about 20" at its widest point, before adding the wheel casters. With their standard wheels the width is about 21" to 21.5". With the Lifelong brand wheels, it will have a width of 21" to 22.5", depending on how the rotating wheel base is turned.
All in all, a good experience.
As I wrote, these are my initial impressions [I've only had the chair one day]. My intention is to use it daily as a dining chair. I will add to this review as time goes by [e.g., in ~ six months], to indicate how well this product does long-term and with moderately heavy use. I'd appreciate seeing more former reviewers do the same.
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Reviewed in the United States on January 10, 2023
★★★★★ 5
Rock bottom price, better than rock bottom quality
Color: Black
tl;dr there are definitely better chairs available, even better chairs that aren't that much more money, but if rock bottom is your price target, this one is hard to beat.
I bought my 7-year-old a $30 task chair at Target even knowing it's weight limit of 150 pounds implied it was of very, uh, questionable construction. He weighs 50 pounds though so I figured it'd be fine for occasional use for him. It was basically trash, however.
I found this instead and it's pretty solid for $60 delivered. The instructions are clear and easy to follow. The actual assembly is as easy as it gets for a task chair (snap casters in, put in a couple screws). Be aware that the seat base is 100% plastic, although I'd be astounded if anyone used cast aluminum for a seat base anywhere close to $100. It is not _particularly_ comfortable, ergonomic, or well made, although it is of slightly better construction than I was expecting. I'm 5' 11" and 200 pounds and the word I'd use to describe sitting on it is "acceptable". I suspect the seat foam is easily the weakest link regarding longevity if used by an adult.
The real benefit here is that $60 _feels_ like the correct price for a chair of this quality, whereas a local big box store is going to want close to double that, especially without a "sale" going on.
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Reviewed in the United States on January 31, 2026
★★★★★ 5
Easy to assemble, and comfortable!
Color: Blue
I bought this chair for my teenaged son, who has a small student's desk in his room (also ordered and assembled at the same time). This fits perfectly for the small desk, and is reasonably comfortable for a medium-sized adult, teenager, or older child. Once put together, the chair itself appears to work flawlessly, seems comfortable enough, the height is easily adjustable, and of course -- the most important part, according to my son -- "spins silently 'round and 'round really fast for a long time." The blue color is a nice, deep blue hue that works well for him and makes it stand out a little more than your average black chair. I was able to assemble it fairly quickly without issues. My son uses it to sit in for his schoolwork and computer gaming/programming/hobbies at his desk, etc. and he says it's comfortable, even after sitting in it for 1-2 hours at a time.
With this type of chair, you're getting exactly what you pay for and what you see in the pictures. No more, no less. The price is fairly reasonable, it feels sturdy, and if you're looking for an easy and simple office chair for light task work at a computer desk for a teenager or college student with limited space, this is an easy win. While it's not the smallest office chair out there, it's certainly not a large one, either. I am a medium-sized woman at 5'4", and my bottom doesn't hang off of it; that said, a taller/bigger person might want to look into something a little larger for comfort, if they have the space for it. My son is 5'6" (and growing) and slim, so it works perfectly well for him. My husband, who is larger and taller than us, sat in it and said it didn't feel bad...but he was unsure how comfortable it would be sitting in it for longer stretches of time. So...your mileage may vary.
Overall, this was exactly what we were looking for and precisely what we expected for this product, so we're happy. I will update this review should anything change.
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Reviewed in the United States on May 3, 2019
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