Carnival Glory was docking when it collided with Carnival Legend, leaving at least six people with minor injuries and Glory’s stern crushed.

Two Carnival Corp ships have collided in the port of Mexico’s Caribbean resort of Cozumel, crushing the stern of a 952-feet long (290-meter) vessel and leaving passengers stunned at the loud impact.

The massive Carnival Glory was sailing into a dock when it struck Carnival Legend, which was already anchored, according to Carnival, the world’s largest cruise operator.

At least six people sustained minor injuries on Glory as groups of guests were being evacuated from the third-floor and fourth-floor dining room after the crash.

In a statement, Carnival said:

“Carnival Glory was maneuvering to dock when it made contact with Carnival Legend which was already alongside. We are assessing the damage, but there are no issues that impact the seaworthiness of either ship.”

The company also “advised guests from both ships to enjoy their day ashore in Cozumel.”

Civil protection authorities in Cozumel said the incident took place at around 8:30 a.m. (1430 GMT) and that officials were investigating.

Passenger Jordan Moseley said he was eating breakfast on the docked Carnival Legend when he felt the crash.

Moseley told Reuters:

“All of a sudden we felt the ship rock to one side and then back into place. A few minutes later, the cruise director announced that the Carnival Glory had crashed into our ship while docking due to the high winds and rough ocean conditions in Cozumel.”

A video taken by an onlooker shows pieces of Carnival Glory, which can carry nearly 3,000 passengers, tumble onto the deck of the oncoming vessel, with some splashing into the churning water.