We are currently developing a device to detect a vessel engine whether it is in an ON mode or OFF mode. Looking at the datasheet of MPU9150, it does have a Digital High Pass Filter (DHPF) (Register 28 - Accelerometer Configuration) which is very useful to determine whether the engine is in an ON mode and remove the noises generated by the ocean wave that make the vessel moving.
Does MPU6050 has the DHPF?