[. . . ] With the Simrad STEEL BLISTER, you can combine horizontal and vertical beams, and you can view the schools of fish with both a "bird's eye" and as a "slice" at the same time. Full beam stabilization maintains a clear picture of the target even in rough seas. [. . . ] The Simrad STEEL BLISTER, as with all Simrad sonars, provides a dual mode facility offering two sonars in one. Individual tilt angle, range, gain and filter settings can be made on each of the two sonar presentations. To create the Simrad STEEL BLISTER sonar, the designers started from scratch with a brand new design. A new transducer was developed, the transceiver technology has been greatly improved, and the computing power has been enhanced using a new processor unit. The menu system is however identical to the former SH80 and the highly appraised SX90. This offers instant recognition, and makes the sonar easy to use and understand. (A) Processor Unit (B) Colour display (C) Operating Panel (D) Power supply for Operating Panel (E) Transceiver Unit (F) Power Supply Unit (G) Motor Control Unit (H) Hull Unit (I) Transducer · New and improved FM transmission · Ideal for detection of mackerel, tuna and all fish close to bottom. This enable the skipper to focus on the targets, without acting as a "human filter". The STEEL BLISTER provides detailed information about school density, speed, depth, heading and size. The STEEL BLISTER is the natural choice as a companion to the SX90 low frequency sonar. Herring In this screen capture a school of herring has been detected, and it is evaluated by the skipper. Target tracking is activated, and in the lower left corner the school's heading, distance from the vessel, and speed is displayed. The 180° vertical view is activated, and can be seen in the lower part of the screen. The school is just lifting from the bottom, and it has a good density. [. . . ] The 180° vertical view is activated, and can be seen in the lower part of the screen. The school is just lifting from the bottom, and it has a good density. [. . . ]