Naša jahta je spremna za izlet.

Because jahta is a feminine singular noun, and naš meaning our changes to match the noun.

Here are the basic forms:

• naš = masculine singular
• naša = feminine singular
• naše = neuter singular

So:

• naš brod = our boat
• naša jahta = our yacht
• naše more = our sea

In Croatian, possessive words like naš behave like adjectives and agree with the noun in gender, number, and case.

Most Croatian nouns ending in -a are feminine, and jahta follows that pattern.

So jahta is:

• feminine
• singular
• here in the nominative case, because it is the subject of the sentence

That is why the other words connected to it also appear in feminine singular forms:

• naša
• spremna

Because spremna describes jahta, and in Croatian adjectives must agree with the noun they describe.

The dictionary form is usually spreman meaning ready, but it changes:

• spreman = masculine
• spremna = feminine
• spremno = neuter

So:

• brod je spreman = the boat is ready
• jahta je spremna = the yacht is ready

Even though spremna comes after je, it still agrees with the subject jahta.

Je means is.

It is the 3rd person singular present tense of biti meaning to be.

So:

• jahta je spremna = the yacht is ready

English speakers sometimes wonder if it can be left out, because some other Slavic languages do that more often. In normal standard Croatian, you usually keep je in sentences like this.

It is in the nominative singular.

That is because naša jahta is the subject of the sentence:

• Naša jahta = our yacht
• je spremna = is ready

So the structure is:

• subject: Naša jahta
• verb: je
• adjective complement: spremna
• prepositional phrase: za izlet

Because Croatian does not have articles like English the and a/an.

Croatian usually shows definiteness through:

• context
• word choice
• sometimes word order
• sometimes demonstratives such as taj meaning that

So jahta can mean:

• a yacht
• the yacht
• just yacht

The exact meaning depends on context. In this sentence, naša already makes the reference specific enough: our yacht.

Here za means for.

The phrase spreman / spremna za nešto means ready for something.

Examples:

• spreman za posao = ready for work
• spremna za školu = ready for school
• spremna za izlet = ready for the trip / outing

So in this sentence, za introduces the thing the yacht is ready for.

Because after za in this meaning, Croatian uses the accusative case.

The noun izlet is a masculine inanimate noun. In the singular, masculine inanimate nouns often have the same form in the nominative and accusative.

So:

• nominative: izlet
• accusative: izlet

That is why you see za izlet, not za izleta.

By contrast, izleta would usually be a genitive singular form, which is not what this sentence needs.

Izlet usually means a short trip, outing, or excursion, often for pleasure.

It is not always the best word for every kind of trip. For example:

• izlet = outing, excursion, day trip
• putovanje = journey, travel, longer trip
• vožnja = ride, drive
• plovidba = sailing, voyage by water

So za izlet suggests something like for an outing or for a pleasure trip, not necessarily a long voyage.

Yes, Croatian word order is more flexible than English word order.

The neutral, straightforward version is:

• Naša jahta je spremna za izlet.

But other orders are possible for emphasis, such as putting attention on za izlet.

One thing to know is that je is a clitic, so it tends to stay near the beginning of the sentence or clause. For a learner, the safest choice is to keep the original order unless you have a reason to emphasize something.

A good approximate pronunciation is:

• Naša = NA-sha
• jahta = YAH-ta with j pronounced like English y
• je = ye
• spremna = SPREM-na
• za = za
• izlet = IZ-let

Useful pronunciation points:

• š sounds like English sh
• j sounds like English y
• Croatian spelling is quite phonetic, so words are usually pronounced close to how they are written

So the whole sentence is roughly: NA-sha YAH-ta ye SPREM-na za IZ-let