Die leidraad was so duidelik dat ons die baken gevind het.

So ... dat is a very common Afrikaans pattern meaning so ... that.

In this sentence:

• so duidelik = so clear
• dat ons die baken gevind het = that we found the beacon / marker

So the structure is:

• X was so [adjective] dat ...
• X was so [adjective] that ...

It works almost exactly like English.

That happens because the clause after dat is a subordinate clause.

In a normal main clause, Afrikaans usually has:

• Ons het die baken gevind.

But after dat, the verb cluster moves to the end:

• ... dat ons die baken gevind het

So:

• main clause: ons het gevind
• subordinate clause: dat ons ... gevind het

This is one of the most important word-order patterns in Afrikaans.

Het is the auxiliary verb used to form the perfect tense in Afrikaans, much like have in English.

So:

• vind = find
• gevind = found
• het gevind = have found / found

In this sentence, gevind het is the subordinate-clause version of het gevind.

Afrikaans very often uses this perfect form where English might simply use a past tense.

Was is the past tense of is.

So:

• is = is
• was = was

Here it describes a past situation:

• Die leidraad was so duidelik ... = The clue was so clear ...

It tells you that the clue’s clarity is being described in the past.

Because duidelik is being used after the verb as a predicate adjective.

Compare:

• die duidelike leidraad = the clear clue
  
  • adjective comes before the noun, so duidelike
• die leidraad was duidelik = the clue was clear
  
  • adjective comes after was, so just duidelik

So in your sentence, duidelik stays in its basic form because it follows was.

Because die is the definite article the, and it is used before each definite noun.

So:

• Die leidraad = The clue
• die baken = the beacon / marker

Afrikaans does not have different forms like the for masculine, feminine, or neuter nouns. It just uses die for all of them.

It can mean both, depending on the sentence.

In this sentence, ons means we because it is the subject of the clause:

• dat ons die baken gevind het = that we found the beacon

Afrikaans does not change the form the way English does:

• English: we / us
• Afrikaans: ons / ons

So the job of the word in the sentence tells you which English meaning fits.

Leidraad can mean a clue, guideline, or guiding thread, depending on context.

Historically, it is made up of parts meaning something like a leading thread, but in normal use it often means:

• a clue in a mystery
• a hint that helps you work something out
• sometimes a guiding principle

So in this sentence, it is very natural to understand it as a clue or lead.

Baken can mean a beacon, marker, or landmark, depending on context.

It often refers to something that helps with direction or guidance, either literally or figuratively.

So the sentence could suggest finding:

• a literal beacon or marker
• a figurative point of reference

The exact best translation depends on the wider context.

Yes, but only if it stands as its own main clause.

For example:

• Die leidraad was baie duidelik. Ons het die baken gevind.

That is two main clauses.

But in your sentence, the second part is introduced by dat, so it becomes a subordinate clause, and the word order changes:

• ... dat ons die baken gevind het

So both are correct, but they are used in different sentence structures.

Yes. That is very common in Afrikaans.

Afrikaans often prefers the perfect:

• Ons het die baken gevind

Even when English would simply say:

• We found the beacon

So learners should not expect a one-to-one match with English tense names. In many everyday contexts, Afrikaans uses het + past participle where English just uses a simple past form.