Dalga yüksekliği pruvada arttı.

Because Turkish often uses a noun compound to say things like wave height, water temperature, door handle, etc.

The pattern is:

• first noun: bare form
• second noun: usually takes the 3rd person possessive ending -(s)ı / -(s)i / -(s)u / -(s)ü

So:

• dalga = wave
• yükseklik = height
• dalga yüksekliği = wave height

Here yükseklik becomes yüksekliği because:

• it takes the compound ending -i
• final k softens to ğ before a vowel

So this -i is not the accusative here. It is part of the compound structure.

No. In this sentence, yüksekliği is the subject, so it is not accusative.

The -i here belongs to the noun compound:

• dalga yüksekliği = wave height

If it were accusative, it would be marking a definite direct object, but that is not what is happening here.

A useful comparison:

• Dalga yüksekliği arttı. = The wave height increased.
  
  • dalga yüksekliği is the subject
• Dalga yüksekliğini ölçtük. = We measured the wave height.
  
  • here yüksekliğini really is accusative, because it is the direct object

So in your sentence, the ending is part of the compound, not an object marker.

Pruva is a nautical word meaning the bow of a ship, meaning the front part of the vessel.

The ending -da is the locative case, which often means:

• in
• on
• at

So:

• pruva = bow
• pruvada = at the bow / on the bow / in the bow area

In this sentence, it tells you where the increase happened.

This is due to two common Turkish sound rules:

1. Vowel harmony
   The vowel in the suffix changes to match the previous vowel.

   • after back vowels, you get -da / -ta
   • after front vowels, you get -de / -te

2. Consonant voicing
   If the word ends in a voiced sound, Turkish uses d If it ends in a voiceless consonant, Turkish uses t

Since pruva ends in:

• the back vowel a
• and a vowel sound before the suffix

the correct form is -da:

• pruvada

Arttı is the past tense of artmak, which means to increase.

Formation:

• art- = verb stem
• -tı = past tense ending here

So:

• artmak = to increase
• arttı = increased

There are two t letters because:

• one t belongs to the stem art-
• the other comes from the past tense ending -tı

This is completely normal in Turkish spelling.

Because Turkish normally prefers verb-final word order.

A neutral Turkish sentence often follows a pattern like:

• subject + place/time + verb

So here:

• Dalga yüksekliği = subject
• pruvada = location
• arttı = verb

That gives:

• Dalga yüksekliği pruvada arttı.

This is a very natural word order in Turkish.

Yes. Turkish word order is flexible, though the verb often still stays at the end.

For example, you could also say:

• Pruvada dalga yüksekliği arttı.

This puts more focus on pruvada.

The original sentence sounds neutral and report-like. The changed version emphasizes where the increase occurred.

Turkish has no articles like English a or the.

So a noun phrase like dalga yüksekliği can be translated as:

• wave height
• the wave height

depending on context.

In technical, descriptive, or situational language, English often uses the even though Turkish does not show it directly.

Not for all situations. Pruva is a maritime/nautical term.

It specifically means the bow of a ship or boat. It is not the normal general-purpose word for front in everyday conversation.

So this sentence sounds like something from:

• shipping
• sailing
• marine engineering
• navigation
• a technical report

Sometimes yes, but they are not always identical.

• arttı = increased
• yükseldi = rose / went up

With something measurable like wave height, both can work in many contexts. But arttı often sounds a bit more neutral or technical, especially when talking about a numerical increase.

So:

• Dalga yüksekliği arttı. = The wave height increased.
• Dalga yüksekliği yükseldi. = The wave height rose.

Both are possible, but arttı fits very naturally in a report-style sentence.

A careful learner-friendly breakdown is:

• yük-sek-li-i

A few pronunciation notes:

• ü is like German ü or French u; English does not have an exact match
• ı is the Turkish dotless i, a sound English also does not really have
• ğ is usually not pronounced like a hard g; it often lengthens or smooths the previous vowel

So yüksekliği does not sound like there is a strong g in it.

The most important thing is:

• pronounce all syllables clearly
• do not say a hard English g

It is grammatically singular.

That is because it refers to wave height as one measurement or condition, not to multiple separate heights.

Turkish often keeps this kind of technical or abstract noun phrase singular:

• su sıcaklığı = water temperature
• hava basıncı = air pressure
• dalga yüksekliği = wave height

Even if many waves are involved in reality, the phrase refers to the general measured quantity, so singular is natural.