Nava ajunge azi.

Because nava means the ship / the vessel, while navă means a ship / a vessel.

Romanian usually adds the definite article to the end of the noun, instead of using a separate word like the in English.

• navă = a ship
• nava = the ship

So -a here is the feminine singular definite article.

Yes. Navă is feminine.

That matters because Romanian nouns change form depending on gender and whether they are definite or indefinite. In this sentence:

• navă = indefinite singular
• nava = definite singular

A learner may also notice that many feminine nouns form the definite article with -a, though the exact pattern can vary.

Here, ajunge means arrives.

The verb a ajunge can have a few related meanings depending on context, including:

• to arrive
• to reach
• sometimes to be enough

In Nava ajunge azi, the natural meaning is arrives today.

Because Romanian often uses the simple present where English might use either the simple present or the present progressive, depending on context.

So:

• ajunge can mean arrives
• and in some contexts it may feel close to is arriving

In this sentence, English would most naturally say The ship arrives today or The ship is arriving today, depending on the situation. Romanian does not need a separate is form here.

The dictionary form is a ajunge = to arrive / to reach.

When you remove a, you get the present-tense forms. In the present tense:

• eu ajung = I arrive
• tu ajungi = you arrive
• el/ea ajunge = he/she/it arrives

Since nava is a third-person singular subject (it), ajunge is the correct form.

Azi means today.

Yes, azi and astăzi both mean today. The difference is mostly one of style and preference:

• azi = shorter, very common in speech
• astăzi = also very common, sometimes felt as slightly fuller or a bit more formal depending on context

So Nava ajunge azi and Nava ajunge astăzi are both correct.

Yes. Romanian word order is fairly flexible, though the most neutral order here is:

• Nava ajunge azi.

You could also say:

• Azi ajunge nava.
• Nava azi ajunge. (less neutral, more marked)

Changing the order usually changes emphasis, not the basic meaning.

For example:

• Azi ajunge nava. = emphasis on today
• Nava ajunge azi. = neutral statement

No. Romanian does not require an extra subject pronoun here.

Because nava is already the subject, adding ea would usually be unnecessary:

• Nava ajunge azi. = natural
• Ea ajunge azi. = It arrives today, but only if the subject is already understood from context
• Nava ea ajunge azi. = generally unnatural in normal usage

Romanian often omits subject pronouns unless they are needed for contrast or emphasis.

A simple approximation for an English speaker is:

• Nava ≈ NAH-vah
• ajunge ≈ ah-ZHOON-jeh
• azi ≈ ahz

A few helpful points:

• j in Romanian sounds like the s in measure
• ge here sounds like jeh
• stress is roughly:
  • NA-va
  • a-JUN-ge
  • A-zi

A rough full pronunciation would be:

NAH-vah ah-ZHOON-jeh AH-zee

Yes, often you could.

• Nava ajunge azi.
• Nava sosește azi.

Both can mean The ship arrives today.

The difference is that:

• a ajunge can mean to arrive / to reach
• a sosi more specifically means to arrive

So sosește is a very natural alternative if you want to focus specifically on arrival.