Toplanma istasyonu üst güvertede.

In Turkish, the verb to be is often left out in the present tense.

So:

• Toplanma istasyonu üst güvertede = The assembly station is on the upper deck

This is a very common Turkish pattern. In English, you need is, but in Turkish, a noun phrase followed by a location can stand on its own.

Compare:

• Masa mutfakta. = The table is in the kitchen.
• Adam dışarıda. = The man is outside.

If you want to make it past or future, Turkish usually adds something:

• Toplanma istasyonu üst güvertedeydi. = The assembly station was on the upper deck.

Literally, it breaks down like this:

• toplanma = gathering, assembling, assembly
• istasyon = station
• istasyonu = the station / its station, depending on context and grammar

Together, toplanma istasyonu means assembly station or muster station.

The word toplanma comes from the verb toplanmak, meaning to gather, to assemble.

So the phrase is basically gathering station in literal structure, but the natural English meaning is assembly station or muster station.

This is because Turkish often marks nouns inside noun compounds.

In toplanma istasyonu, the second noun takes the third-person possessive ending:

• istasyon = station
• istasyonu = its station

This is a standard Turkish compound pattern:

• tren istasyonu = train station
• otobüs durağı = bus stop
• toplanma istasyonu = assembly station

Even though English does not show possession here, Turkish often uses this structure for noun + noun combinations.

So you do not need to translate -u as a separate word every time. It is just part of how Turkish builds many compound nouns.

Üst güvertede means on the upper deck.

Breakdown:

• üst = upper, top
• güverte = deck
• güvertede = on the deck / in the deck area

The ending -de is the locative suffix, which often means:

• in
• on
• at

So:

• evde = at home / in the house
• okulda = at school
• masada = on the table
• güvertede = on the deck

In this sentence, güvertede tells you the location of the assembly station.

The locative suffix changes form because of vowel harmony and consonant harmony.

The four possible forms are:

• -de
• -da
• -te
• -ta

In güvertede, the correct form is -de because:

1. The last vowel of güverte is e, so the suffix uses e-type harmony: -de / -te
2. The word ends in a vowel, so there is no devoicing issue, and d stays d

So:

• güverte + de → güvertede

Examples:

• oda → odada = in the room
• ev → evde = at home
• park → parkta = in the park
• ağaç → ağaçta = in/on the tree

Turkish word order is more flexible than English, but this sentence follows a very normal pattern:

• Toplanma istasyonu = topic/subject
• üst güvertede = location

So the sentence is literally:

• Assembly station upper deck-on

This is natural Turkish. The most important information often comes near the end, and location phrases commonly appear there.

English requires The assembly station is on the upper deck, but Turkish does not need the verb is here.

You could also hear:

• Üst güvertede toplanma istasyonu var.

That means something like There is an assembly station on the upper deck.
So the Turkish structure changes depending on what is being emphasized.

Here, üst means upper.

So:

• üst güverte = upper deck

Depending on context, üst can mean:

• top
• upper
• above

Examples:

• üst kat = upper floor
• üst raf = top shelf / upper shelf
• üst bölüm = upper section

It does not mean upstairs by itself in this sentence. It is describing the deck: the upper deck.

Turkish does not have a definite article like English the.

So a phrase like toplanma istasyonu can mean:

• assembly station
• the assembly station

Which one is meant depends on context.

Likewise, üst güvertede can mean:

• on an upper deck
• on the upper deck

In real usage, context usually makes it clear.

Turkish also does not use an indefinite article exactly like English a/an, though bir can sometimes mean a/an:

• bir istasyon = a station / one station

But in your sentence, no article is needed.

Yes. Toplanma istasyonu üst güvertededir is also correct.

The ending -dir adds a more formal, official, or assertive tone.

Compare:

• Toplanma istasyonu üst güvertede. = neutral, natural, everyday
• Toplanma istasyonu üst güvertededir. = more formal, instructional, official

You often see -dir in announcements, written instructions, formal statements, or definitions.

So on a ship sign or in a safety manual, güvertededir would sound especially natural.

A simple pronunciation guide:

• Toplanma ≈ toh-PLAHN-mah
• istasyonu ≈ ees-tahs-YOH-noo
• üst ≈ a rounded vowel somewhat like German ü or French u, then st
• güvertede ≈ gyu-ver-te-de

A few useful notes:

• Turkish letters are usually pronounced consistently.
• ö and ü may be unfamiliar to English speakers.
• Stress in Turkish often falls toward the end, but compounds and borrowed words can vary.

If you cannot produce ü yet, it is better to aim for a rounded front vowel than to say a plain English oo.

Usually it means the station’s location as a general fact:

• The assembly station is on the upper deck

Because this is a nominal sentence in the present tense, it often expresses a current or standard state.

In a safety context, that normally means this is where the assembly station is located.

If Turkish wanted to emphasize temporary presence in a different way, it might use another structure depending on context. But for signage, instructions, or descriptions, this sentence sounds like a straightforward location statement.