Harbour dream meaning is explained below using 4 different sources. Each interpretation is shown with its source.

Interpretation 1 — Eric Ackroyd

(1) Coming into harbour may mean finding / wanting a refuge (from life or some particular problem); reaching your goal; or (because a harbour might represent the vagina / womb) a strong mother- attachment.

(2) Putting to sea may symbolize making a start on exploring your unconscious; or a need to liberate yourself from a strong mother- attachment.

Source: A Dictionary of Dream Symbols Author: Eric Ackroyd

Interpretation 2 — Internet Archive - Anonymous

Means a happy time to come, with one you care for. Falsehood will be exposed.
Source: Mystic Dream Book Author: Internet Archive - Anonymous

Interpretation 3 — Tony Crisp

See quay.
Source: A Guide to Dreams and Sleep Experiences Author: Tony Crisp

Interpretation 4 — Versatile - Anonymous

See bay
Source: Dream Meanings of Versatile Author: Versatile - Anonymous