SS175M 1KW Through-Hull Medium CHIRP Transducer – 20° Tilt

The SS175M from Advance Trident is a purpose-built transducer designed for serious mid-to-deep water fishing. Operating across the Medium Chirp range of 85–135 kHz, it delivers clear, separated returns from fish and bottom at extended depths, while maintaining precise target discrimination in challenging conditions. With 1 kW transmit power and a depth rating to 457 m (1,500 ft), this transducer provides reliable, long-range performance where it matters most.

Mid-to-deep water precision, without swapping gear

The SS175M combines power and precision to reveal structure and schooling fish from shallow to mid-depths. Its 50 kHz total bandwidth from a single transducer creates a versatile sonar footprint, giving you broad coverage with sharp target separation. The mid-to-deep performance is paired with ultra-clear bottom detail, helping you distinguish seabed variations from fish targets even when the bottom is complex.

Tilted Element design for optimal hull integration

Designed for speed and varied hulls, the SS175M uses Advance Trident’s Tilted Element concept. It is available in three fixed tilts to match a wide range of hull deadrise: 20°, 12°, or 0°. The 20° tilt is optimized for hull deadrise roughly 16°–24°, keeping the ceramic element oriented horizontally to maximize echo returns when mounted flush to the hull. This alignment minimizes drag while preserving high-resolution performance at planing speeds.

Rugged, marine-ready construction

Housed in stainless steel, the SS175M is built for saltwater, vibration, and impact resistance. The low-profile through-hull design maintains excellent resolution at speed across varied hull shapes—whether you’re planing, stepping, or using a displacement hull. A depth and water-temperature sensor adds valuable context to your sonar data, helping you correlate fish activity with water conditions.

Real-world use cases and practical benefits

• Deep-water scouting: efficiently cover offshore shelves, drop-offs, and thermoclines with dependable mid-depth returns.
• Bottom discrimination: accurate seabed detail helps you separate bottom features from fish targets at speed.
• Structure and kelp lines: clear returns from underwater structures, aiding in targeted casting and trolling strategies.
• Contextual data: depth and water-temperature readings enrich your fishing data for seasonal pattern insights.

Who benefits most

Captains of mid-to-large boats needing reliable mid-depth performance, anglers targeting fish at depths up to 1,500 ft, charter operators, and multispecies teams who value depth data, bottom detail, and temperature context in a compact, rugged transducer.

Why this transducer stands out

Advance Trident blends decades of marine electronics expertise with field-tested reliability. The SS175M’s combination of 1 kW power, clear Medium Chirp returns, robust stainless steel construction, and a streamlined, low-profile through-hull housing delivers repeatable sonar performance in demanding offshore environments. With three fixed tilt options to match your hull deadrise, you get consistent depth data and target clarity at speed—without compromising hull performance.

Key specifications at a glance

Transmit power: 1 kW

Frequency range: 85–135 kHz (Medium Chirp)

Depth rating: up to 457 m (1,500 ft)

Bandwidth: 50 kHz total from a single transducer

Beamwidth: 11–16° depending on frequency and tilt

Hull compatibility: Through-hull stainless steel housing, suitable for planing, stepped, or displacement hulls

Tilt options: Fixed 20°, 12°, or 0° to match hull deadrise

Sensor suite: Depth and water-temperature sensor

Notes: The SS175M is part of a family of Chirp-ready transducers designed to deliver deep-water precision with a compact, rugged form factor.