Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What was the water depth that entered service in 2001 named Cajun Express?

### Inputs:
table_name: table, columns: ['Name', 'Type', 'Entered service', 'Water depth', 'Location', 'Customer']

### Response:
SELECT Water depth FROM table WHERE Entered service = 2001 AND Name = cajun express