S3 Intermediate With a shaft construction mix of 50% carbon and 50% fiberglass, the S3 is the recommended oar for club use and shared equipment situations. The S3 has the same stiffness as the S2 Soft, but is significantly more durable, making it ideal for fleet purchasing in club or scholastic sculling programs. With the heavier shaft weight, the S3 is less sensitive in high winds and bad weather and have more weight in hand than our elite S4 and S2 shafts and therefore offer more stability during the recovery phase for the developing rower. The S3 also enjoys popularity among scullers who enjoy open or rough water.