in under the waterline to see where and how the damage occurred. because we only see pictures of the damage to the right-hand side above the waterline. but the serious damage is likely to be below the surface. we're talking about areas like the machine room, the radio room, and the u.s. navy said they don't know yet when and how they can get into that area. but divers will be trying to gain access to that area to have more detail into how this accident occurred. 18 hours in, we still have many unanswered questions as to how this collision could have occurred to begin with. >> let me ask you this quickly. i know you said night is falling right now. do you get any sense as to whether that will impact the search operation? will they stop for the night and resume at sunup or will they do this around-the-clock? >> there's been no update from the u.s. navy or the japanese coast guard as to whether or not