The Trimble® SPS361 and Trimble SPS461 GPS Heading and Positioning Receivers are modular, dual-antenna systems for marine construction and hydrographic survey. The receivers can partner with Trimbles HYDROpro software to provide the tools for precise placement of piles, bridges, caissons, offshore drilling rigs and coastal defenses – providing you with dredge head positioning; vessel positioning, vessel heading, and pitch or roll.
Both the Trimble SPS361 and Trimble SPS461 provide precise GPS heading. The Trimble SPS361 supports MSK Beacon. The SPS461 includes all the features of the SPS361 plus it’s available with internal 450 or 900MHz radio and is upgradable to varying levels of positioning, including precision RTK.