No ships bear Parzival toward the grail. However, early in von Eschenbach's narrative, Parzival defends the queen Condwiranmurs' castle against a siege. In the aftermath of the siege, two ships come to the castle and relieve the starving town:
Now two gleaming sails were made out from the top of the ramparts! They belonged to vessels driven smack into port by a gale. Their botteoms were laden in a way to delight the denizens -- their sole cargo was food. In His wisdom God had so ordained it.Selections from Wolfram von Eschenbach's Parzival. Translated by A.T. Hatto
The famished crowd poured at great speed from the fortifications down towards the ships to pillage them. They could have sped like leaves before the win, these people so lean and shruken and scant of flesh, they had so little stuffing in their hides. But the Queen's Marshall placed the ships under his protection and forbade any to touch them on pain of the gallows. He led the merchants to the city and into the presence of his lord.
Parzival ordered them to be paid double the price of their wares, but the merchants judged it too high and so they were reimbursed for their outlay. Once again fat dripped on to the castle-dwellers' coals. Now I should love to be a mercenary there, for nobody is drinking beer: they have wine and food in plenty. (109)