Каюта находится рядом с автомобильной палубой.

Russian does not use articles. There is no separate word for the or a/an.

So Каюта находится рядом с автомобильной палубой can mean:

• The cabin is next to the car deck
• A cabin is next to the car deck

The exact meaning depends on context.

Находится means is located, is situated, or simply is in the sense of physical location.

So the sentence is a little more explicit than just saying where something is. It sounds natural in formal or neutral descriptions.

Compare:

• Каюта находится рядом с автомобильной палубой = The cabin is located next to the car deck
• Каюта рядом с автомобильной палубой = The cabin is next to the car deck

Both are possible, but находится adds a clear sense of location.

Yes, с often means with, but in this expression рядом с is a fixed combination meaning:

• next to
• beside
• near

So it is best to learn рядом с as one unit.

Examples:

• рядом с домом = next to the house
• рядом с лифтом = next to the elevator

Because рядом с requires the instrumental case.

The dictionary form is палуба.
In the instrumental singular, it becomes палубой.

So:

• палуба = deck
• с палубой = with / next to the deck
• рядом с палубой = next to the deck

Because adjectives in Russian must agree with the noun they describe in:

• gender
• number
• case

Here, палубой is:

• feminine
• singular
• instrumental

So the adjective must also be feminine singular instrumental:

• автомобильная палуба = car deck
• с автомобильной палубой
• рядом с автомобильной палубой

Каюта is in the nominative case because it is the subject of the sentence — the thing that is located somewhere.

So the basic structure is:

• Каюта = subject
• находится = verb
• рядом с автомобильной палубой = location phrase

Usually рядом с means next to, beside, or close to. It often suggests close proximity, but not necessarily physical contact.

So in this sentence it naturally means the cabin is very near the car deck, probably adjacent or close by.

If you want a less specific near, Russian can also use words like около.

Yes. Russian word order is fairly flexible.

You can also say:

• Рядом с автомобильной палубой находится каюта.

This still means the same thing, but the emphasis is a little different.
That version puts the location first, like:

• Next to the car deck is the cabin.

The original sentence is the more neutral order.

Literally, it means automobile deck or car deck — a deck for cars or vehicles, especially on a ferry or ship.

• автомобильный = automobile / car-related
• палуба = deck

So автомобильная палуба is the normal kind of phrase you would use for a ship’s vehicle deck.

Both каюта and палуба are feminine nouns.

You can tell because their dictionary forms end in -а, which is a common feminine ending.

This matters because adjectives and some verb forms must agree with feminine nouns.

For example:

• автомобильная палуба = feminine adjective + feminine noun
• In the past tense: Каюта находилась... = feminine past-tense verb form

So knowing the gender helps you build correct Russian sentences.