Complex sentence: The "Crathie" ether did not see the warning rockets or chose to ignore them for she did not alter her course with such disastrous consequences in that she struck the liner with such force that whole compartments of the "Elbe" were immediately flooded.
Split into simpler sentences: The "Crathie" ether did not see the warning rockets or chose to ignore them. She did not alter her course, with such disastrous consequences, that she struck the liner with such force that whole compartments of the "Elbe" were immediately flooded.