The ship itself is not wheelchair accessible. I think it would be tough to get around with a walker. Since the Navy still owns the ship, the only way that access has been improved is two large stairs added to get on and off the boat. All other p-ways and and stairwells are original to the ship so they're not very wide. Additionally, to get to/from the torpedo room and the engine room, there are water tight hatches which are not very large. There is a mockup of the water tight hatches in the OMSI building proper so potential guests can make sure they can pass through it before buying their tickets and making it all the way down to the boat. That being said, if a guest couldn't make it through those hatches, they might skip those two rooms but take the rest of the tour. I'm just not sure all the p-ways are going to be wide enough to permit a walker so a cane would be better if they can get around with one. Source: I'm a Submarine Veteran and volunteer as a tour guide on the Blueback.
Most likely not. But they could use a 4 point cane to navigate through it. But you must be able to crouch through the compartment doors which mighty be too much. Hope this helps.
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