When getting ready to cast off from a dock where the current is holding your boat against the dock which line should you cast off last?

When preparing to cast off from a dock where the current is holding your boat against it, you should cast off the bow line last. This allows the stern of the boat to swing away from the dock, preventing the boat from being pushed against the dock by the current. By keeping the bow line secured until the last moment, you maintain better control and ensure a smoother departure.