When traveling from the Pacific Ocean to the Atlantic Ocean on the Panama Canal, what is the primary travel?

by ship, or other watercraft

Probably a boat or ship I think is all that can pass. It's been awhile since school.

boat

I'll give you a hint, it floats on water.

It is by boat, ship, or one of those large barges which carry cargo from the atlanic to the pacific. We get a lot of our food from those barges.

&*&*&
It could be seaplane, boat, boat/train or by foot

Primary travel is ship or boat. If this is a trick question you can also walk,because you said on instead of through.

west to east

Only by Ship & they have to pay a toll to use it.

Since opening, the canal has been enormously successful, and continues to be a key conduit for international shipping. Each year the canal accommodates the passage of more than 14,000 ships, carrying more than 203 million tonnes of cargo. By 2002 about 800,000 ships had passed through the canal.

Tolls for the canal are decided by the Panama Canal Authority and are based on vessel type, size, and the type of cargo carried.[27]

For container ships, the toll is assessed per "TEU" (Twenty-foot Equivalent Unit), which is the size of a container measuring 20 feet by 8 feet by 8.5 feet (6 m by 2.4 m by 2.6 m). Effective May 1, 2005, this toll is $42 per TEU. This is scheduled to rise to $49 on May 1, 2006, and again to $54 on May 1, 2007. (A Panamax container ship may carry over 4,000 TEU.) A reduced toll is charged for container ships "in ballast"; ie. travelling empty, with no cargo or passengers.

Most other types of vessel pay a toll per PC/UMS net ton, in which one "ton" is actually a volume of 100 cubic feet (2.8 m³). (The calculation of tonnage for commercial vessels is quite complex.) As of 2006, this toll is $2.96 per ton for the first 10,000 tons, $2.90 per ton for the next 10,000 tons, and $2.85 per ton thereafter. As with container ships, a reduced toll is charged for freight ships "in ballast".