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ContinuousWave: Small Boat Electrical
Lowrance Structure Scan HD
|Author||Topic: Lowrance Structure Scan HD|
posted 03-15-2012 12:15 PM ET (US)
Lowrance and SIMRAD Yachting have jointly announced a new product, Structure Scan HD, an improved side-scan and down-scan SONAR. The Lowrance website has full details. The Structure Scan HD uses the LSS-2 black box SONAR and transducer, which apparently supersedes the LSS-1 model. The improvements are increased range of operation and higher resolution than before. The side scan is now claimed to provide images up to 600-feet side-to-side, i.e., 300-feet from the boat, and the down scan is claimed to provide higher resolution than in prior models. More details are given in
Here is a screen capture showing echo returns on the side scan from about 250 to 300-feet out:
The Structure Scan HD device can work with the recently announced HDS Gen2 devices as well as with older HDS devices. The product consists of the Structure Scan HD image processor or black box SONAR, seen here
and the LSS-2 transducer assembly, seen here
The black box device connects to the display using high-speed ethernet network cables, and up to three displays can be connected.
Here is a Structure Scan HD screen capture showing two screens, with the boat having passed over two large groups of bait fish. On the left is the high-resolution down-scan images, and on the right is the HD side-scan image:
Here is a down-scan image showing details of a rocky lake bottom:
posted 03-15-2012 07:08 PM ET (US)
The Structure Scan HD can also be used with Simrad NSS, NSE or NSO chartplotters-multifunction displays. For more details see the information at
posted 03-20-2012 01:18 PM ET (US)
One clear difference between the LSS-2 transducer and its predecessor LSS-1 is the physical size. The LSS-2 transducer is about half again longer. It is quite a long transducer assembly. I have not seen a dimension for it, but it looks to be a foot long.
It also appears that in the Structure Scan HD black box SONAR a single frequency of approximately 455-kHz is used; the LSS-1 system used 455-kHz and a higher frequency, about 800-kHz in a dual frequency system.
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