The phrase "hath ship come in" refers to the arrival of a long-awaited opportunity or success. There are several synonyms that can be used in place of this phrase, including "has the tide turned," "has fortune smiled upon us," "have we struck gold," or "has our luck finally changed." Each of these phrases conveys a similar sense of anticipation and hope for a positive outcome. It's important to note that while these phrases may be used interchangeably, their contextual meanings may differ slightly based on the specific situation at hand. Ultimately, they all share the same underlying sentiment of eagerly awaiting a long-awaited and much-desired breakthrough or success.