The Boardwalk and Ultimate Abyss onboard Symphony of the Seas

(11:30 a.m. EDT) -- The world's largest cruise ship -- Royal Caribbean's Symphony of the Seas -- has successfully completed its first sea trials.

Having previously been postponed due to bad weather, the sea trials of the 230,000-ton, 5,479-passenger vessel took place from February 15 to 18. The ship left the STX France shipyard in Saint-Nazaire and covered a total of 1,000 nautical miles in 80 hours off Belle-Ile island in the Atlantic Ocean.

Sea trials are a standard procedure for all new vessels, in order to assess the ship's seaworthiness, machinery and engines. A statement released by the French shipyard said that every onboard system was tested during the trial.

Another short sailing will take place before the ship is officially handed over to Royal Caribbean next month.

Just Back From Symphony of the Seas: Touring the Shipyard

Covering 16 decks, the line's fourth Oasis-class ship will debut the new-to-the-line Ultimate Family Suite, with features including a slide from the children's bedroom to the lounge and a floor-to-ceiling Lego wall. There will be a redesigned Boardwalk and two new eateries for Royal Caribbean -- El Loca Fresh for Mexican fast food and Fresh the Hooked Seafood, a fresh fish and raw bar.

The first pre-inaugural five-day sailing will depart from Barcelona on March 31, and after its launch, Symphony of the Seas will offer seven-night Mediterranean cruises from Barcelona before repositioning to Miami for seven-night Caribbean cruises.

--By Jeannine Williamson, Cruise Critic contributor