OceanGate's Titan submersible carries a state-of-the-art self-contained inertial navigation system which it combines with an acoustic sensor known as a Doppler Velocity Log to estimate the depth and speed of the vehicle relative to the sea floor.

海洋之门公司的泰坦潜水器携带了最先进的独立惯性导航系统，它结合了一个被称为多普勒速度日志的声学传感器，以估计潜水器相对于海底的深度和速度。