RMS Olympic Ismay had previously planned to build a ship named "Olympic" as a sister ship to . The senior Ismay died in 1899 and the order for the ship was cancelled. Construction of "Olympic" began three months before "Titanic" to ease pressures on the shipyard. Several years would pass before "Britannic" would be launched. In order to accommodate the construction of the class, Harland and Wolff upgraded their facility in Belfast; the most dramatic change was the combining of three slipways into two larger ones. "Olympic" and "Titanic" were constructed side by side. "Olympic"s keel was laid on 16 December 1908
Athenian sacred ships vessel was constantly repaired by replacing individual planks to keep it seaworthy while maintaining its identity as the same ship. (For the philosophical question of the ship's identity, see Ship of Theseus.) After the reforms of Cleisthenes, a ship was named for each of the ten tribes that political leader had created; these ships may also have been sacred ships. The "Paralus" and the "Salaminia", and possibly some other sacred ships, served in the Athenian combat fleet. Those two vessels, being particularly swift, were used as scout and messenger ships, but also fought in the line of battle. The "Paralus"