A tourist suffered a punctured lung and permanent damage to her sight after being crushed between two boats in the Firth of Forth.

Marine accident investigators have issued new safety recommendations after looking into the collision.

The 45-year-old mother-of-two was sitting on an inflatable tube in the rigid inflatable boat Osprey II and was crushed when it collided with the vessel Osprey in the Firth of Forth.

Both vessels were on their way from Anstruther harbour to seabird haven the Isle of May when the collision happened at 12.52am on July 19 last year.

The skipper of each boat had increased speed and commenced a power turn away from each other with the intention of passing in the course of completing a round turn, the Marine Accident Investigation Branch found.

As the vessels turned towards each other, it became apparent to both skippers they were in danger of colliding and although they both acted quickly to reduce the speed of their respective vessels, and so lessen the impact, they were unable to prevent the collision.

There were 12 passengers on Osprey - 11 adults and one child - and 11 passengers on Osprey II, seven adults and four children, one being the skipper's son.

Passenger spaces on Osprey II were normally limited to the eight spaces available on its four bench seats, however in good weather two additional spaces for the vessel were sold, with the extra passengers sitting in designated positions on its inflatable tubes.