Free images results:

Tub pictures, stock photos and images


Bath Time Stock Photo
Author: Webking
Dream Boat Stock Photos
Author: Array
Ship Royalty Free Stock Images
Author: Allein
Matches Royalty Free Stock Photography
Author: Wallacedb

Also, here are some commercial RF-licensed images that match your search criteria:  
Bath tub Royalty Free Stock Photos
Author: Alexhg1
Hot Tub Stock Photo
Author: Raycan