The ship is the great crossing — a vessel large enough to carry a whole life over the deep. The sinking ship is the collective venture failing; jumping ship, allegiance abandoned; my ship coming in, fortune's long-awaited arrival; the voyage, the life-passage itself.
Positive Resonance
The great crossing undertaken, fortune arriving, the vessel that carries much
Shadow Aspect
The sinking venture, going down with the ship, seasick on the passage
Nuances
Ship sinking: the large shared venture failing
Jumping ship: leaving before the going-down
Your ship coming in: the long-awaited fortune docking