From Swamplot, Houston's most excellent real estate blog:
HOUSTON SHIP PILOT Louis Vest assembled this video from more than 2000 still photos he took on a 3 1/2-hour journey on a 600-ft.-long Panamax tanker navigating the Houston Ship Channel:
The ship was only moving at 5-6 knots for the first half of the trip and up to 10 knots in the open areas away from the docks. The journey begins just below the Port of Houston turning basin at the end of the channel and continues down to Morgan’s Point at the head of Galveston Bay. We still had 32 miles to go to get out to the pilot station in the Gulf of Mexico at that point.
Vest fastened his Nikon D700 to an outside rail and set it to take a photo every 6 seconds.
What does this trip look like in the daytime? Vest made a similar video last year (high-res version).