Dreaming about floating freely without being steered in a specific direction indicates that our life has no direction. We must define some goals to achieve.

…To dream that you’re sailing in a lifeboat suggests that you wish for your problems to end. To dream that a lifeboat is sinking suggests that you have lost your hopes for solving a problem. To dream that you’re in a lifeboat that is sailing adrift suggests that you’ve seen yourself fail and you have then lost all that you yearned to achieve. If in the dream someone intervenes and saves the dreamer, it indicates that he/she should be hopeful for a better future….

Being a sailor in a dream and seeing us at the sea, indicates concern because our matters can go adrift without having a direct form of guiding them. But if a sailor appears in our dream, then some authors interpret this as an augury of a brief love or friendship.