CAPE CANAVERAL, Fla. - A Russian supply ship is docked at the International Space Station, making a delivery of about two tonnes of food, water, equipment and scientific experiments.

The three men aboard the space station are monitoring everything from inside. Russian and U.S. space officials say the docking went smoothly.

The unmanned Progress cargo ship blasted off from Kazakhstan earlier this week.

Space shuttle Discovery is scheduled to lift off May 31 with an even bigger delivery for the space station: a massive laboratory from Japan named Kibo, which means "hope."

Two Russian cosmonauts and one U.S. astronaut are living at the orbiting complex.