The Riverboat ST is specially designed for the SonTek S5 or M9 acoustic Doppler current profilers. The trimaran design provides excellent stability and maximizes data quality in a wide range of water velocities and surface conditions. High velocities and standing waves, often problematic with other deployment options, may be handled with more security using the Riverboat ST trimaran.  Made of unbreakable polyethylene, the Riverboat ST is strong and can handle tough deployment conditions. The standard boat configuration accommodates the S5 or M9 with or without the DGPS option. For older SonTek profilers such as the RiverCat and previous generation River Surveyor, the Riverboat ST02 and ST03 trimarans are available.