![SI-TEX SP38-4 Autopilot Core Pack Including Rotary Feedback Only, No Compass or Pump [SP38-4]](https://cdn.shopify.com/s/files/1/0538/9769/1296/files/78773XL.jpg?v=1738364953)
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Description
SI-TEX SP38-4 Autopilot Core Pack Including Rotary Feedback Only, No Compass or Pump [SP38-4]SP38 4 Autopilot Core Pack Including Rotary Feedback Only, No Compass or Pump Features: IST Intelligent Steering Technology provides superior vessel steering capability ADAPTIVE steering for sea conditions and varying vessel speeds AUTO SETUP allows auto drive detection, rudder response time, compass detection and calibration NMEA 2000, ETHERNET, and NMEA 0183 interface Configurable for Fishing, Offshore Vessels, Workboats, Towboats and Yachts WORK
SP38-4 Autopilot Core Pack Including Rotary Feedback Only, No Compass or Pump
Features:
- IST – Intelligent Steering Technology provides superior vessel steering capability
- ADAPTIVE steering for sea conditions and varying vessel speeds
- AUTO-SETUP – allows auto-drive detection, rudder response time, compass detection and calibration
- NMEA 2000, ETHERNET, and NMEA 0183 interface
- Configurable for Fishing, Offshore Vessels, Workboats, Towboats and Yacht’s
- WORK Mode suitable for Fishing Boats, Towboats and Workboats
- PRC- Proportional Rate Control feature provides gentle smooth steering response
- Multi-Station capability with security station lock
- SUNLIGHT viewable Color 5.7” LCD display
- NAV Mode provide adaptive precise track steering
- ALC – Automatic Leeway Compensation for Drift, Tide & Wind
- Fully compatible with onboard instruments and steering systems
- Optional Z-Drive interface allows 360 Azimuth drive interface
- Optional Automatic Bow-Thruster Control for hands free Sabiki Fishing or station keeping
- Multi-Language capability: English, Chinese, French, German, Norwegian, Spanish, Italian, Vietnamese, etc.
- Standard with Flush Mount kit, Optional Swivel mount bracket
- IP67 Waterproof – Control Head, TS4, NF4 and WS4
- RoHS & CE compliance for EMI and RFI immunity
Additional Features:
- 9 level backlit LCD display
- LCD Display switches to Red Night Palette to protect Operators night vision
- Pre-defined parameter sets for full or semi-displacement, planning hulls, stern drives and sailboat applications
- Multiple steering parameters for Fast cruise, Slow cruise and Work modes
- Simple to use course knob with mechanical detent
- Multi-station capability with security station lock
- Automatic trim
- Adjustable yaw, turn rate and rudder settings
- PORT and STBD dodge buttons for collision avoidance
- Output for optional analog rudder angle indicator, up to 4 stations
- Fully compatible with onboard NMEA N2K instruments and most steering systems
Specifications:
- Operating Voltage: 10 to 30 VDC
- Power Consumption: Average 0.5 Amps, 3 Amps Peak (Lower consumption capability with low backlight setting) Drive Output: 20 Amps
- Network: NMEA 2000 & Ethernet
- Navigational Interface: NMEA 0183 input/Output
- NMEA 0183 Output: Heading (10x per sec), Autopilot Status (1x per sec)
- Heading Reference: Fluxgate, Magnetic Compass, NMEA Compass or Sat Compass
- Course Resolution: 1°
- Course Detection: 0.5°
Specifications:
- Type: Parts
- Box Dimensions: 7"H x 18"W x 18"L WT: 14.9 lbs
Quick Guide (pdf)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
LOVE this pillow!!!! I have 2!!!!
Size: Queen (Mid Loft), Number of Items: 1
Well…..I have a love affair with these latex pillows. I purchased 2 of them. I have been allergic to feathers since birth and could only use latex pillows growing up. But, they became very hard to find for many years. I tried all the other kinds of pillows on the market and hated them all!!! “Won’t go flat!”….. whatever! They would go flat almost immediately. Or “Good for side sleepers!”….. NOPE!! I had a stiff neck for a week!! DONE with all of them. So,I finally got on Amazon and found this pillow. Ahhhhhh!! Loved it. Slept like a log! All night! Didn’t go flat!! No stiff neck!!! A winner!!!! Frankly,I don’t care about the cost… yeah…I know….we call have to count our change……including me. I saved to buy this pillow…..both times. AND, I would do it AGAIN!!!! And…proud to do it! So, if you have had it with all of those new prefangled so-called pillows…try this one. I would only avoid it like the plague if you are allergic to latex. Otherwise,I would definitely recommend this pillow! Wherever I go….my pillow goes. Camping, on a trip, to visit relatives…..my pillow will travel!!!!
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Reviewed in the United States on October 3, 2025
★★★★★ 5
So comfy
Size: King (Pack of 1), Style: Standard Loft (4" - 5")
I spent time looking up/watching videos on pillows for neck pain and this one comes up a lot. I’m someone that used to wake up every few weeks with a stiff neck so bad it could make me cry at work. I haven’t had that happen once after months of using this pillow. I look forward to laying my head down on it every night. It’s a luxury experience every time. I think what it does so well is maintain its shape. You can really squish it up how you want and it stays there even after hours. Moldable but somehow still firm. It’s expensive but to me the value is there because I no longer get crazy neck pain from sleep. Worth trying it out for sure. Btw I was stuck between this is and Purple brands couple top end options. I never got around to trying them because I tried this one first and was very satisfied!
Feb 2026. Still use it every night and it's still protecting me from neck pain I used to get from sleeping. It's held up amazing. Hope to use it for many more years.
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Reviewed in the United States on January 18, 2025
★★★★★ 5
Saatva Pillow is great
Size: Standard/Queen (Pack of 1), Style: Standard Loft (4" - 5")
So far this is the best pillow I have had in the last 10 years and I have tried two Purple pillows a couple different memory foam and Gel pillows at least 4 more pillows that I can't even remember the names of. My neck and shoulders are almost pain free. I have also been doing more stretching of my arms which is also helping, but this pillow has really made the most difference in the pain I have had, I felt difference from the first time I put my head on it. It's comfortable, the perfect height I got the 4"-5", I also got the queen size and it's great. It supports my head just right. I also ordered the Saatva Classic 14" mattress from the company and I sure hope it's as good or better would be great because I have back issues for the last 50 years.
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Reviewed in the United States on September 16, 2025
★★★★★ 1
Cotton Fluff Around a Mostly Empty Bag
Size: King (Pack of 1), Style: High Loft (6"-7")
Bought the high-loft king, thinking it would be a great (tall) side-sleeper. What I got? A very nice, completely compressible cotton outer shell wrapped around a bag a bit smaller than a standard pillow. In that bag? A tiny amount of small latex chunks, just about a third full. That’s right, some cotton fluff around a basically empty bag. Could you buy some latex yourself and add it? No, the bag is sewn shut. You could probably fill a small pillow with latex you bought elsewhere and put that in. But seriously, what did you pay Saatva for in that case?
Probably as close as I’ve seen a major/high-reputation company get towards a literal example of rip off.
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Reviewed in the United States on May 31, 2026
★★★★★ 3
Wrong item ships/decent pillow/price unjustified
Size: Standard/Queen (Pack of 1), Style: Standard Loft (4" - 5")
Sent me the wrong pillow twice in a row. It said high loft and standard loft on the packing, not sure what the problem is. I ordered standard loft both times, and both times they sent high loft. That name is very deceiving though. If what I have is high loft, the standard loft wouldn’t be much thicker than your standard flat down pillow. If you’d like any sort of neck support I’d suggest starting with the high loft and going down instead of the other way around. I am 5’ 7” 130lbs and this pillow does not lift my neck up further than neutral, which is a good thing. Shredded memory foam pillows are significantly higher or thicker if that helps.
Pillow itself grew on me. You can definitely feel that there is a different material in the center of the pillow. I ordered it as a gift and ended up keeping both pillows. The price tag on this item is absolutely outrageous. I would have never ordered it for myself. Saatva products don’t last in my experience, we got their firmest mattress and within 2 years it was sagging horribly. I am interested to see how long this pillow lasts!
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Reviewed in the United States on January 19, 2026