Úrbótaáætlunin, áhættumatið og eftirlitið eru skráð; trúnaðurinn og umboðið eru mikilvæg.

In Icelandic, the is usually attached to the end of the noun instead of being a separate word.

So here:

• úrbótaáætlunin = the improvement plan
• áhættumatið = the risk assessment
• eftirlitið = the monitoring / supervision
• trúnaðurinn = the confidentiality
• umboðið = the mandate / authorization

The endings -in, -ið, and -inn are all forms of the definite article, shaped by the noun’s gender and declension.

Icelandic does have separate article forms like hinn / hin / hið, but those are not the normal default way to say the with a plain noun.

Because Icelandic nouns belong to different genders, and the definite article changes to match them.

In this sentence:

• úrbótaáætlun is feminine → úrbótaáætlunin
• áhættumat is neuter → áhættumatið
• eftirlit is neuter → eftirlitið
• trúnaður is masculine → trúnaðurinn
• umboð is neuter → umboðið

So the different endings are not random; they reflect grammatical gender and noun type.

Here are the basic forms:

• úrbótaáætlun — feminine
• áhættumat — neuter
• eftirlit — neuter
• trúnaður — masculine
• umboð — neuter

The forms in the sentence are all the definite singular nominative forms.

Because each clause has a plural subject overall, even though each individual noun is singular.

For example:

• Úrbótaáætlunin, áhættumatið og eftirlitið = three things together
• trúnaðurinn og umboðið = two things together

So Icelandic uses plural eru = are, not singular er = is.

A good way to think about it is:

• Úrbótaáætlunin er skráð = The improvement plan is recorded
• Úrbótaáætlunin, áhættumatið og eftirlitið eru skráð = The improvement plan, the risk assessment, and the monitoring are recorded

Because in Icelandic, when a subject is a mixed-gender group, agreement usually defaults to neuter plural.

In the first clause, the subject includes:

• one feminine noun: úrbótaáætlunin
• two neuter nouns: áhættumatið, eftirlitið

So the predicate is neuter plural:

• eru skráð

In the second clause, the subject includes:

• one masculine noun: trúnaðurinn
• one neuter noun: umboðið

So again the predicate is neuter plural:

• eru mikilvæg

This is very common in Icelandic: mixed group = neuter plural.

Because the neuter plural form of many adjectives and participles is identical to the neuter singular form.

So skráð can mean:

• neuter singular: recorded
• neuter plural: recorded

The form stays the same, and the context tells you whether it is singular or plural.

That is why:

• áhættumatið er skráð = singular
• úrbótaáætlunin, áhættumatið og eftirlitið eru skráð = plural

The same kind of thing is happening with mikilvæg: here it is neuter plural.

They function here as predicate complements after eru.

More specifically:

• skráð is the past participle of skrá (to register / record), used adjectivally here
• mikilvæg is an adjective meaning important

So:

• eru skráð = are recorded / are registered
• eru mikilvæg = are important

The actual finite verb in both clauses is eru.

Yes. They are the subjects of the verb eru, so they are in the nominative.

That is why you see forms like:

• úrbótaáætlunin
• áhættumatið
• eftirlitið
• trúnaðurinn
• umboðið

The predicate words skráð and mikilvæg also agree with the subject in gender/number and are used in nominative-style predicate position after vera.

Icelandic makes very frequent use of compound nouns.

A few examples here:

• úrbótaáætlun = úrbóta

  • áætlun
    Literally something like plan of improvements / corrective actions

• áhættumat = áhættu

  • mat
    Literally assessment of risk

Very often, the first part of an Icelandic compound appears in a form related to the genitive or a bound stem.

This is one reason Icelandic words can look long: instead of using several separate words, Icelandic often packs the idea into one compound noun.

The semicolon separates two closely related independent clauses:

• Úrbótaáætlunin, áhættumatið og eftirlitið eru skráð
• trúnaðurinn og umboðið eru mikilvæg

It works much like in English: stronger than a comma, but not as final as a period.

You could also write them as two separate sentences. The semicolon simply shows that the two statements belong together.

You would usually remove the suffixed article:

• Úrbótaáætlun, áhættumat og eftirlit eru skráð; trúnaður og umboð eru mikilvæg.

That would sound more general, like talking about those things as categories or types, rather than specific known items.

So the version with definite endings points more toward:

• the specific improvement plan
• the specific risk assessment
• the specific monitoring
• the specific confidentiality
• the specific mandate / authorization

Whereas the indefinite version is more general.