Lowrance and Simrad, both owned by the same company, share the StructureScan 3D platform, which features a transducer with seven elements, three pointed left, three right and one down. “That lets us send a signal out and receive it back in multiple locations,” says Matthew Laster, sonar product manager. “It can send a signal on one element and receive it back on the other two.”
The technology, Laster says, is called interferometry. “Traditional sonar can’t tell you the depth 30 feet to the left or right of the boat,” he says. With 3D, “we can show things not attached to the bottom, and we can put them in real space as to where they’re holding, whether against a wreck or drop-off.”
StructureScan 3D uses the 455 kHz frequency as a compromise between depth and resolution. Lower-frequency beams would achieve greater depth but lose target clarity. “The big offshore guys have not embraced [the technology] yet. They’re not looking for fish on structure,” Laster says, explaining why 3D was designed more for inshore and nearshore anglers.
The 3D transducer captures returns as much as 600 feet to either side of the boat. A variety of mount options allow anglers to properly fit
most boats. The 3D module and a single transducer start at $999 and are compatible with Lowrance HDS Gen3 and Carbon MFDs as well as Simrad NSS evo2 and evo3.
Simrad StructureScan 3D uses interferometry WR VKRZ DQJOHUV VWUXFWXUH DQG ƓVK LQ WKH ZDWHU column relative to their boats.