To my knowledge the Bumble Bee Tuna Plant was once located at the industrial area around the Kewalo Basin.
Here are the directions to get to the Kewalo Basin:
From Waikiki take a sidestreet from Kalakaua Ave to Ala Wai Blvd.
Take a left turn onto Ala Wai Blvd, take a left turn onto Ala Moana Blvd.
Take a left turn on a small street named Ahui.
On your left you find warehouses and factories located on Kewalo Basin,
at the end of the street is a small waterfront park: Kewalo Basin Park.