The phrase "haddest one's ship come in" is a colloquial expression that denotes that someone has become financially successful or has achieved their goals. There are several synonyms for this phrase such as "hit the jackpot," "made it big," "struck gold," "hit pay dirt," "struck it rich," "rode the gravy train," "came into a windfall" and "found one's fortune." All of these expressions signify that someone has experienced a positive turn of events that has brought them wealth, success or accomplishment. These synonyms can be used interchangeably in conversation, literature or media to convey the same connotation of success or a windfall gain.