We present the Loftsails Vision III C75 RDM Mast.
What are the key differences between RDM and SDM compatibility at Loftsails, especially for camber sails?
RDM Masts
These have a smaller diameter with thicker walls, giving you a softer, more elastic, and more forgiving feel on the water. They’re known for their high durability and break resistance, making them ideal for wave sailing and rough conditions where the mast has to bend significantly.
With camber sails, RDM masts allow for lighter and smoother rotation of the camber, making maneuvers like tacking and jibing easier. They’re generally recommended for smaller sails, lighter riders, and anyone who prefers a more forgiving rig. Historically, Loftsails was one of the first brands to achieve World Cup and Speed Tour victories with RDM-compatible race sails, at a time when SDM was still the standard in racing.
SDM Masts
These have a larger diameter with thinner walls and provide a crisper, stiffer, and more direct feel. They maintain the sail’s profile more stably under heavy luff tension and are often preferred by larger, more aggressive sailors using larger sail sizes on flat water, as they can handle more direct body pressure.
Although they’re considered less forgiving, they offer a powerful and very direct connection to the rig—exactly what some ambitious riders value for maximum speed.
SPECS
| Size | IMCS | Weight |
| 340 cm | 14 | 1.4 kg |
| 370 cm | 17 | 1.55 kg |
| 400 cm | 19 | 1.75 kg |
| 430 cm | 21 | 2 kg |
| 460 cm | 25 | 2.3 kg |
| 490 cm | 29 | 2.45 kg |

















