Due to a driving error, a tanker loaded with almost 1,300 tons of diesel got stuck in the Rhine near St. Goar (Rhein-Hunsrück district).
The water police said there was no leak after contact with a rock on Sunday evening.
According to initial findings, the crew had underestimated the very narrow and current-intensive route.
St. Goar - The ship can only be recovered in daylight, emphasized a spokesman.
The five-person crew had to spend the night on board.
dpa