How much did part of the seafloor move during the 2011 Japan earthquake?

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earthquake damage, Honshu, Japan, 2011 — Japan earthquake and tsunami of 2011 Aerial view of damage to a portion of the northeastern coast of Honshu, Japan, following the offshore earthquake and resultant tsunami there on March 11, 2011.

During the 2011 Japan earthquake, a section of the subduction zone measuring approximately 190 miles (300 km) long by 95 miles (150 km) wide experienced significant displacement. This portion of the seafloor lurched as much as 164 feet (50 metres) to the east-southeast and thrust upward by about 33 feet (10 metres).1