Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The ship's anchor in a dream indicates steadfastness in a matter and certainty in religion. It is security from fear.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The anchor indicates a man relied upon. Whoever sees the ship cast its anchors, his affairs will stabilize.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The anchor is interpreted as steadfastness. Whoever sees himself raise it is embarking on a journey.