Raymarine ST900/P120 Speed Temp Thru-Hull Transducer Retractable w/13.7M (45') Cable [E70673]ST900 P120 Speed & Temp Thru Hull Transducer Retractable with 13. 7M (45') Cable Speed performance has been taken to the next level with the ST900 Speed Temperature sensor. Featuring the new Gen2 Paddlewheel, the ST900 outperforms all other paddlewheel sensors for responsive startup and linearity. The Gen2 Paddlewheel begins delivering accurate speed reporting as low as 0. 3 knots and maintains smooth speed output through 45 knots. Available with a