It's been a busy few years for Marine Quest, run by father and son team Jim and Iain Easingwood, and their latest find- the German U-Boat, U-40, is arguably their most impressive find yet.
The 65m submarine was sunk by British Submarine HMS C-24 and decoy trawler Taranaki on June 23, 1915, as part of what the enemy later described as a 'dirty trick' but for home forces represented the first success of a covert naval operation, now famously referred to as "Q-ships".
For years the final resting place of WW1 U-40 was thought to be much closer inshore near Girdle Ness than her actual position proved to be.
There have been a number of unsuccessful expeditions over the past decade or so which makes Marine Quest's discovery even more of an achievement.
A team of divers led by Jim Macleod and Martin Sinclair set off from Eyemouth just after breakfast on Wednesday, March 18, in the firm's boat, Silver Sky and couldn't have asked for better weather.
Iain Easingwood said after nearly a year's worth of research it was just a case of waiting for the right day to venture out.
He added: "I'd been studying the U-40 since the start of last year and we established a positive location in December.
"I spoke to the divers the week before last to say the weather was looking good for last Wednesday but it was still a bit of a rush getting everyone together.
"You can't just go out on an expedition on a hunch, there's a lot of groundwork involved and I try to put as much information together as possible.
"Even then you can't always be sure you've found the exact U-Boat you're looking for. There's a lot of them out there but thankfully from the pictures we took experts were able to pinpoint certain things."
The wreck of the U-40 submarine lies in 65 metres of water lying over at a 45 degree angle, still with her attack periscope raised. It is believed that the site hadn't been previously visited by divers.
There was a large amount of damage to the port side stern of the submarine this was thought to be due to torpedo impact fired by HMS C-24.
The wreck is a war grave, 29 German sailors lost their lives in total and only Gerhardt Fürbringer commander of the U-40 and two others who had been in the conning tower, escaped the sinking submarine, and were taken prisoner. It is belived that Furbringer later escaped and went onto command another U-Boat.
Iain said he still doesn't think people in Berwickshire realise the wealth of history there is on their doorsteps.
"This wreck in particular had such an amazing story behind it," he said.
"It's fascinating to think that there are many other wrecks out there in the North Sea which are still waiting to be discovered.
"We're always looking for the next exciting find and it's just a case of keeping your ear to the ground and playing a waiting game."
The Scottish dive team involved in last weeks expedition were were Martin Sinclair, Jim Macleod, Paul Dustan, Nigel Goodman, Graeme Govenlock, Jim Burke, Dave Ward, Tony Ray and Mike Wilcox.