The Rainier Youth Choirs group, Colla Voce, performs on the lead boat of the Argosy Christmas Ship on Dec. 2.

The ship leaves from the Leschi Marina at 2:30 p.m. and returns at 4:45 p.m.

Since it began in 2006, Rainier Youth Choirs has been a featured performing group on board the Argosy Christmas Ships. This year, Colla Voce can be heard on the ship, or at one of the two bonfires where the ship will stop.

While the ship is stopped, Colla Voce will sing a 20-minute holiday concert that will be broadcast to everyone on shore. The first stop is Seward Park at 3:10 p.m.; 5900 Lake Washington Blvd. S, Seattle. The second stop is Madrona Beach Park at 4:10 p.m.; 85 Lake Washington Blvd., Seattle.

Learn more at rainieryouthchoirs.org.

Book tickets for the cruise at argosycruises.com.