The group received £1,000 from Persimmon Homes Yorkshire as part of its Community Champions scheme.
The town’s sea cadet corps offers a range of activities and qualifications for youngsters aged 10 to 18.
The recent donation will go towards new marine ropes, navigational resources, two-way radios and renewing its vital safety equipment.
Jennifer Lea from the Scarborough Sea Cadet Corp was delighted to receive the donation.
She said: “Our group is about creating a safe and engaging environment for the younger generation to experience a range of adventurous activities.
“We offer sailing, canoeing, rock climbing, cookery and engineering activities, to name a few, and as a charity we have to fundraise to be able to afford all the necessary equipment. Persimmon Homes’ support makes a big difference and we are very grateful.”
The Sea Cadets meet on Tuesdays and Fridays (6.45pm to 9.15pm). Email [email protected] for more information.