11 dead after Missouri duck boat sinks

11 people drowned Thursday after a duck boat on Table Rock Lake in Missouri sank with 31 aboard.

Rader said an off-duty sheriff's deputy was working security at the scene and helped rescue survivors. Recovery efforts continued after dark, with some passengers still unaccounted for. A dive team from Western Taney County was in the water and a team from the Missouri State Highway Patrol was on the way, as well.

First responders from multiple agencies responded to the incident, initially reported as a mass casualty incident involving a "tourist type boat" on Table Rock Lake near Branson.

Duck boats are WWII-era amphibious trucks still widely used for land-and-water tours, but their age and growing tally of deadly accidents may soon consign them to museums.

Following is video of the boat sinking, taken from a nearby restaurant or vessel by Jennie P. Carr of Joplin, Missouri; the capsizing boat seems to be only yards away. https://www.youtube.com/watch?v=k1dg-E0sW04

Here's footage taken inside another duck boat on the lake that returned safely, showing the conditions and what it's like inside a duck boat:https://twitter.com/AndrewHavKY3