A very good question, particularly considering much of the current safety standards were derived from lessons learned from Titanic. Of interest to the subject would be the changes made to the Olympic and Britanic (her sister ships) after the disaster. If I remember correctly the water tight bulkheads were extended all the way up to the main deck and a main deck accessways made water tight so that each watertight compartment could be a sealed box. As well as adding lifeboats of course.

Now that we know there could never be such a thing as an unsinkable ship (Safety features will only slow down the sinking of ships but not prevent it).

How save was Titanic when she was brand new? How safe will marine architects grade Titanic's design for the era in which she was built and even the modern era we live in? Was her design old fashioned even at the time of construction? What mark (out of ten) would shipbuilders give Titanic? Is there anyone who can comment on this?