Container liquid level measurement system in marine environment

The invention discloses a container liquid level measurement system in a marine environment, and the system comprises: a liquid level measurement device which is used for measuring the liquid level of a measured container and outputting a liquid level measurement signal; a liquid level measurement error correction device which is used for measuring the pressure of the correction liquid in a static state in advance by using a differential pressure transmitter, synchronously measuring the real-time pressure of the correction liquid by using the differential pressure transmitter when the liquid level measurement device measures the liquid level of the measured container, and outputting a liquid level correction signal; a signal acquisition device; and a processing and calculating unit which is used for taking the ratio of the pressure of the correction liquid in the static state to the real-time pressure as a liquid level correction coefficient, correcting the liquid level measurement signal by using the liquid