Sidrište je blizu otoka, a jedro je spremno.

Sidrište means anchorage or anchoring place—a place where boats or ships can anchor.

It is a real and correct Croatian word, but for many learners it may feel a bit more specific or nautical than very everyday vocabulary. In general Croatian, you may also often hear related words such as:

• sidro = anchor
• usidriti = to anchor
• luka = port, harbor

So sidrište is specifically the place suitable for anchoring.

Because blizu normally takes the genitive case in Croatian.

So:

• otok = island (nominative, basic dictionary form)
• otoka = of the island / near the island (genitive singular)

That is why you say:

• blizu otoka = near the island

This is a very common pattern. Other examples:

• blizu kuće = near the house
• blizu grada = near the city
• blizu mora = near the sea

So the important thing to remember is:

• blizu + genitive

Je is the 3rd person singular present of the verb biti (to be), meaning is.

So:

• Sidrište je blizu otoka = The anchorage is near the island.
• jedro je spremno = The sail is ready.

Croatian often uses je exactly where English uses is.

Because jedro is a neuter noun, and the adjective has to agree with it in gender, number, and case.

Here are the forms of the adjective spreman (ready):

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

Since jedro is neuter, you need:

• jedro je spremno

Compare:

• brod je spreman = the ship is ready
• lađa je spremna = the boat is ready
• jedro je spremno = the sail is ready

A very common clue in Croatian is the noun ending.

Many neuter nouns end in:

• -o
• -e

Since jedro ends in -o, it is very likely neuter.

That is why it goes with:

• spremno and not spreman/spremna

This is not an absolute rule for every noun in the language, but it is a very useful general pattern.

A usually means and, while, or but depending on context. It often connects two clauses by showing a slight contrast or a shift of focus.

In this sentence:

• Sidrište je blizu otoka, a jedro je spremno.

the word a is something like:

• and
• while
• and meanwhile

It is not exactly the same as i.

• i = simple and
• a = and/but/while, often with a contrast or separate piece of information

Compare:

• Marko i Ana = Marko and Ana
• Marko radi, a Ana čita = Marko is working, while Ana is reading

So in your sentence, a links the two ideas smoothly, with a slight sense of meanwhile / and also.

Croatian word order is more flexible than English word order, but the original sentence is the most neutral and natural:

• Sidrište je blizu otoka, a jedro je spremno.

You might also hear variations for emphasis, such as:

• Blizu otoka je sidrište, a jedro je spremno.
• Jedro je spremno, a sidrište je blizu otoka.

These are grammatically possible, but they change the emphasis a little.

For a learner, the best approach is:

• use the given order as the normal default
• learn alternative order later for style and emphasis

It can behave a bit like both, which is why learners often notice it.

In sentences like this:

• blizu otoka

it works very much like a preposition-like word meaning near, and it is followed by the genitive.

You can also see it used more independently, closer to an adverb:

• More je blizu. = The sea is near.

But for practical learning, a very useful rule is:

• when blizu is followed by a noun, that noun is usually in the genitive

Examples:

• blizu škole = near the school
• blizu obale = near the coast
• blizu luke = near the harbor

A rough pronunciation guide for an English speaker is:

• Sidrište ≈ SEE-dreesh-teh
• je ≈ yeh
• blizu ≈ BLEE-zoo
• otoka ≈ OH-toh-kah
• a ≈ ah
• jedro ≈ YEH-droh
• spremno ≈ SPREM-noh

A few useful sound notes:

• j in Croatian is like English y in yes
• š sounds like sh
• č would sound like ch, but it does not appear here
• Croatian pronunciation is usually quite consistent and phonetic

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

So:

• sidrište can mean an anchorage or the anchorage
• otok can mean an island or the island
• jedro can mean a sail or the sail

The exact meaning depends on context.

That is completely normal in Croatian. Learners coming from English often expect an article, but Croatian simply does not use one.

Yes. Spreman / spremna / spremno usually means ready, but depending on context it can also suggest:

• prepared
• set
• available for use

So:

• jedro je spremno

could mean the sail is:

• ready
• prepared
• set and ready to be used

The basic translation ready is the safest one, but the exact nuance depends on the situation.

It is grammatically correct and understandable, but it does sound a bit like a learner or textbook sentence, mainly because it combines two nautical nouns in a simple descriptive way:

• sidrište
• jedro

That does not make it wrong at all—it is perfectly fine Croatian. It just may not be the kind of sentence you hear every day unless the context is sailing, boating, or navigation.

So a learner should treat it as:

• a correct model for grammar
• useful vocabulary in a nautical context