Storage occupies a large area in the minds of people living in a typical nomadic home. Given that the typical size of a nomadic home is not very big, organization is essential. So everything needs to be well planned.
Because by it’s very nature, the nomadic home moves, everything needs to be secured in one way or another during travel. More so on salty water than on the road. Never the less, the principle is the same. For the record, even though my nomadic living experience was entirely on the water, I have also been a commercial, long haul articulated truck driver, so am familiar with the way stuff behaves on the road.
I am only going to go into basic principles here, as there are numerous different ways to achieve the specifics, depending on the situation.
Anything breakable such as glassware and crockery needs to be secured firmly, from movement. Some padding between items will cut down rattling noises, but isn’t necessarily needed, depending on how it is secured.
Something to consider with hanging clothes, is that movement of a nomadic home will cause chafe, which will wear them out much quicker than normal wear and tear. Some options here are to accept the need to replace them much more regularly. Don’t wear clothes that need hanging, or at least reduce the number that do.If you have a flat base (not slats) under bed or seat squabs, you can layout clothes flat between them, to keep them looking at least semi pressed.
For other items, including clothes, the usual method of storage will most likely be cupboards, lockers and secured, or lift and pull draws.
With closed compartments like lockers etc, ventilation is important. Particularly in humid conditions like those found on boats. There are various ways of achieving this, with a common method being to provide openings at the bottom and top of the entry doors. This allows natural heat convection to move the air through by itself.