That video is of the M/V Sam Houston, which has been the Port of Houston’s official public tour vessel since 1958. It is indeed a free boat tour, but there are some important logistics to keep in mind if you are planning to go: Essential Tour Details • Cost: 100% Free. • Duration: A 90-minute round-trip educational tour of the Houston Ship Channel. • Location: 7300 Clinton Drive, Houston, TX 77020 (Gate 8). • Schedule: Generally operates Tuesday through Saturday at 10:00 AM and 2:30 PM (though schedules can change). | REAB