Simrad SS175L 12D Tilt 40-75KHZ Stainless Steel

The Simrad SS175L 12D is a serious piece of hardware designed for a specific job: finding bottom and deep-water targets. Pushing 1 kW of power at a low 40 to 60 kHz frequency range, it excels where standard transducers fail, reliably reading depths up to 2,500 feet. Anglers love the fast-response water-temperature sensor and the flush, low-drag profile of the 12-degree tilt, which perfectly matches moderate hull deadrises without requiring a bulky fairing block.

The trade-offs are directly tied to its deep-water design. The wide beamwidth compromises shallow-water performance, resulting in poor target separation and increased surface noise in the top 100 feet. Installation requires cutting a massive, permanent hole in your hull, and the fixed 12-degree tilt means you cannot adjust the angle if you change boats. Furthermore, the stainless steel housing commands a premium over bronze alternatives.

Despite its steep price tag and shallow-water limitations, the SS175L remains a must-buy for serious offshore anglers, particularly those with metal or stepped hulls where stainless steel is required to prevent galvanic corrosion. If your primary goal is uncompromised deep-water performance to mark bottom structure and pelagic species far offshore, the rugged construction and extreme depth penetration easily justify the investment.