![Airmar B744VL Long Stem Bronze Thru-Hull D/S/T w/FB 8-Pin [B744VL-8G]](https://cdn.shopify.com/s/files/1/2785/3654/files/109053XL.jpg?v=1756941583)
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Description
Airmar B744VL Long Stem Bronze Thru-Hull D/S/T w/FB 8-Pin [B744VL-8G]B744VL Long Stem Bronze Thru Hull D S T with FB 8 Pin The B744VL is a TRIDUCER Multisensor featuring depth, speed, and temperature in a single housing. The 50 200 kHz, dual frequency, single, ceramic element provides great target detail in shallow water at 200 kHz and good deep water bottom tracking at 50 kHz. The B744VLs extended stem length has the extra height needed for steep deadrise vessels or thick, cored fiberglass or wood hulls. The required
B744VL Long Stem Bronze Thru-Hull D/S/T with FB 8-Pin
The B744VL is a TRIDUCER® Multisensor featuring depth, speed, and temperature in a single housing. The 50/200 kHz, dual-frequency, single, ceramic element provides great target detail in shallow water at 200 kHz and good deep-water bottom tracking at 50 kHz. The B744VL’s extended stem length has the extra height needed for steep-deadrise vessels or thick, cored-fiberglass or wood hulls. The required High-performance Fairing gives excellent results at speeds up to 30 knots (34 MPH).
Features:
- Depth, speed, and fast-response water-temperature sensing in one housing
- 600 W of power
- Dual-frequency element:
- 50 kHz with a wide 45° beamwidth for depth performance to 353 m (1200')
- 200 kHz with a 12° beamwidth for depth performance to 206 m (700')
- Extra-long stem for thick or steep-deadrise hull
- Bronze housing with a High-performance Fairing for optimal bottom tracking at higher speeds
- Self-closing water valve reduces water flow into the hull when the paddlewheel insert is being replaced with the blanking plug
- Fins on the sides of the paddlewheel cavity provide improved accuracy in cross-flow conditions
- Also available with a shorter stem (B744V)
Specifications:
- Power Rating: 600 W
- Max Deadrise Angle: 24°
- Housing: Bronze
- Functions: Depth, Speed, Temperature
- Hull Material: Fiberglass or wood
- Max Vessel LOA: Up to 9 m (30')
- Hole Size: 51 mm (2")
- Usable Shaft Length: 140 mm (5.50")
- Acoustic Window: Urethane
- Common Use: Leisure/Yachting, Fishing
- Conventional Beam: 45°/12°
- Max Deadrise: Up to 24° with fairing
- Max Depth: Low frequency- 366 m (1200'), High frequency- 206 m (700')
- Mounting Style: Thru-Hull with Fairing
- Retractable housing: Yes
- Single or Dual Frequency: Conventional Dual Frequency
- Tilted Element: No
- Weight: 2.5 kg (5.5 lbs.)
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
4.1 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
Arrived on time, in good condition, functioning as advertised.
Style: Data Transfer (10Gbps)
This was one of only three or four 4-port USB-C hubs I was able to find. The others IIRC were made by Acer, Belkin, and Rosewill. Of the four, only this one and the Belkin also had power-delivery capabilities, and this one was slightly cheaper.
The cable is a little short, only about 17cm. This can be good or bad depending on your use case. Personally, I think it's adequate, as it's plugged into my monitor, so not having a bunch of extra cable to tie up is a good thing, although it's a little odd to have it partially hanging rather than sitting flat on my desk. Again, not a bad thing, because it's quite light, so nothing is being stressed. However, people who want to plug it into a port on the rear of a tower will most likely need to purchase a USB-C male-to-female cable extension, keeping in mind that to use this hub to it's full capability, you would need a USB4 certified extension rated for 40gbps data & 100w power delivery.
Overall, I am pleased. I will most likely use this for a very long time, at least until USB-C completely replaces USB-A.
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Reviewed in the United States on July 20, 2025
★★★★★ 5
Perfect USB-C hub!
*If you are reading this and wondering if you should get it, or a competitor product that slightly lower in price... just get this one. You won't regret it.*
I already wrote a review, but I forgot to add photos. 1) I couldn't find a hub that had more than 2 USB-C ports; 2) This thing is tiny, doesn't demand attention, and built with aluminum. Not plastic, and doesn't feel cheap; 3) a life saver. I took velcro and mounted the little sucker under my MacBook mount. Now I could plug in my external drives, SD reader, and use the ports on my computer for other peripherals. One thing I was worried about was transfer speeds. I don't expect the fastest speeds ever, but I don't want to regret my purchase if it was going to give me more of a headache than a solution. To my surprise, the transfer speeds are fast, and feel faster than when they were plugged directly into my computer. One hard drive in particular always gave me trouble mounting. it would take forever. Since I purchased this drive it mounts in seconds.
I've used Satechi before, and their product have proven to me over and over to be reliable and of quality.
*If you are reading this and wondering if you should get it, or a competitor product that slightly lower in price... just get this one. You won't regret it.*
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Reviewed in the United States on February 25, 2022
★★★★★ 4
Works for me
This is plugged into a Macbook Air M2 and it supports a time machine drive, a 4TB solid state drive, a wired keyboard, and a free USB port for plugging various stuff into. In this use case, some other hubs don't work well with the Macbook; it keeps forgetting hub-linked drives are there, dropping them when asleep or not seeing them after a reboot. That has not been a problem with this hub. It's true I lose some of that Thunderbolt speed, but really, 5 GB/s is not that small a hole to put stuff through.
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Reviewed in the United States on November 23, 2023
★★★★★ 5
Leave the Laptop at Home - Content Backups
Style: Data Transfer (10Gbps)
I purchased this hub so I could leave the laptop at home and do backups of my GoPro Cameras and Drone footage to an SSD drive. I used FilePro Explorer app on my iPhone to set up tasks to do backups of my content from the SD cards to SSD drive. The one hiccup I encountered is FilePro Explorer (or this hub, not sure which) wouldn't recognize my GoPro cameras as a data source, so I had to remove the SD card from my GoPro Cameras, insert the card into another USB hub that had an SD card adapter (like the one here https://amzn.to/4dlkhMt ) and plug that into the Satechi Hub as another drive source, which it then recognized my SD card from the GoPro camera. So basically two small USB hubs and an App on my iPhone replaced what I would normally do with my laptop. Big weight savings when you're on a bike or motorcycle traveling.
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Reviewed in the United States on May 20, 2026
★★★★★ 1
Flaky and Fickle
Style: Data Transfer (10Gbps)
Worked great for a month. Went to plug in a spare ssd to back up files from tablet and it never has worked since. No data or power through any ports. The light turns on and stays solid but is just dead. Waste of my money for now it is outside of return and I am having troubles getting in touch with Satechi.
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Reviewed in the United States on December 21, 2025
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