Complex sentence: Later, in 1933, on Christmas Eve she grounded on a bank in Wexford Harbour rope used the previous day in an attempt to re-float another vessel got caught in her propeller.
Split into simpler sentences: Later, in 1933, on Christmas Eve she grounded on a bank in Wexford Harbour. Rope, which had been used the previous day in an attempt to re-float another vessel, fouled her propeller.