The Redcar RNLI lifeboat Leicester Challenge 2 was called out
A lone fisherman had to be rescued by lifeboat after his boat broke down in a busy shipping lane.
The coastguard was alerted when the 35ft (10.6m) fishing coble suffered engine failure on Saturday morning.
The craft then drifed across the main shipping lane of the River Tees, one of the UK's busiest ports.
The Redcar RNLI lifeboat Leicester Challenge 2 was called out and towed the stricken vessel back to its moorings at South Gare.
Dave Cocks, of Redcar RNLI, said "The skipper of the coble did exactly the right thing.
"He dropped his anchor and called for help. Unfortunately his anchor didn't take hold and he was being blown across the shipping channel towards the north side of the river.
"Fortunately this incident happened in daylight and there were no large ship movements in the river at the time, otherwise the outcome could have been very different."