Simplify the following text for a Grade 9 native English-speaking person.
Original: The ship was wrecked off the Nore in the Thames Estuary in 1944 with around 1,500 tons of explosives on board , which continue to be a hazard to the area .
Simplified: Montgomery was wrecked off the coast of Kent in 1944 with around 1,500 tons of explosives on board , which continue to be a hazard to the area