Spoil the ship for a ha'porth of tar is the present tense of spoiled the ship for a ha'porth of tar.
The third-person singular simple present indicative form of spoil the ship for a ha'porth of tar is spoils the ship for a ha'porth of tar.
The present participle of spoil the ship for a ha'porth of tar is spoiling the ship for a ha'porth of tar.
The past participle of spoil the ship for a ha'porth of tar is spoiled the ship for a ha'porth of tar.
