Back when the U.S. Navy decided to name an under-construction ship the USS Portland, the world was a different place.

It was 2013. Barack Obama was president, "Blurred Lines" was playing everywhere, all the time, and people were excitedly making videos of themselves doing the Harlem Shake.

Tide Pods were just for clothes washing.

It's taken five years, but now, that under-construction ship is a full-fledged Navy vessel set to be commissioned in Portland this month.

And, unlike two previous ships with the same title, the new USS Portland, is named exclusively for Portland, Oregon. Sorry, Maine.

The USS Portland is a San Antonio class amphibious transport, which is 684 feet long and displaces 25,000 tons of water as it moves through the sea. It will have a crew of 371, and hold 500 to 800 Marines. The ship also has a 24-person hospital ward.

Sound exciting? Well, starting April 16, civilians will be able to tour the ship for free at Portland Marine Terminal #2, 3556 N.W. Front Ave. Tours will take place 2-5 p.m. April 16-18 and 20.

If you go, wear closed-toe shoes and be prepared to climb ladders.

The ship will be commissioned at 10 a.m. Saturday, April 21. However, no more tickets are available for that event.

But don't despair, USS Portland acolytes! Stoller Family Estate has created a USS Portland wine that you can purchase for $30 for your own at-home mock commissioning ceremony.

The USS Portland, sadly, will not live in Portland forever. After April 22, the ship will return to her home port in San Diego. If we know Californians, though, she'll be back.

Correction: An earlier version of this story said Tide Pods were for dishwashing. They are actually for washing clothes.

-- Lizzy Acker

503-221-8052

lacker@oregonian.com, @lizzzyacker