Acts 21:3

3After we sighted Cyprus
Cyprus is a large island in the Mediterranean off the south coast of Asia Minor.
and left it behind on our port side,
The expression left it behind on our port side here means “sailed past to the south of it” since the ship was sailing east.
we sailed on to Syria and put in
BDAG 531 s.v. κατέρχομαι 2 states, “arrive, put in, nautical t.t. of ships and those who sail in them, who ‘come down’ fr. the ‘high seas’…ἔις τι at someth. a harbor 18:22; 21:3; 27:5.”
at Tyre,
Tyre was a city and seaport on the coast of Phoenicia. From Patara to Tyre was about 400 mi (640 km). It required a large cargo ship over 100 ft (30 m) long, and was a four to five day voyage.
For location see Map1-A2; Map2-G2; Map4-A1; Journey of Paul map 3-F3; Journey of Paul map 4-F3.
because the ship was to unload its cargo there.
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