Hi Bill,
Here is some info for Mariner 830:
1 BR, standard Mariner penthouse square footage and configuration, 1 bath with tub/shower combo.
No noise issues. Except for the occasional loud conversation moving past the room, it was perfectly quiet. No ship-related noises at all.
Definitely recommend!
Perfect location, near forward elevators. Very comfortable room. Would book again in a heartbeat.
Note- the bathtub is VERY narrow. Only someone slim and nimble could use it.