My learning

Your plan, your progress, your notes: Furuno CSH-8L MK2 course.

A free school and community for Furuno omni sonar: how it works, how to read it, what the pros do, and how to buy and install it.

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CSH-10 lessons
CSH-8L MK2 lessons
How omni works
Tilt and the beam
Field guide
From the bridge
Trainer
Omni IQ quiz
Glossary

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Journal
Marketplace
Vendor directory
CSH-10 reference

Buy and install

Which omni fits my boat?
Buyer's guide
CSH-10 vs CSH-8L MK2
Price builder
Installation
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© 2026 NautiSignal, LLC. Published independently by NautiSignal, LLC. Furuno, CSH, NavNet, TZtouchXL and RotoKey are trademarks of Furuno Electric Co., Ltd., used here to identify the products discussed.All prices are Furuno USA Manufacturer's Suggested Retail Prices (MSRP) in US dollars, checked November 2026 and subject to change. For products on Furuno USA's Minimum Retail Price (MRP) list, the MSRP shown is also the MRP. Final pricing comes from an authorized Furuno dealer.