3M Black Streak Remover / Fish Blood Remover

While 3M does offer a variety of marine cleaning products, they actually have two separate products for the jobs you mentioned:

3M Marine Black Streak Remover: This is a product specifically designed to remove stubborn black streaks from boat surfaces. These streaks are often caused by water runoff, exhaust fumes, or environmental pollutants. The 3M Marine Black Streak Remover is formulated to be fast-acting and easy to use, leaving your boat's surface clean and streak-free.

3M Marine On-Deck Cleaner & Stain Remover: This product is a multi-purpose cleaner that can tackle various boat cleaning tasks, including removing fish blood stains. It's formulated to be effective on a variety of surfaces like fiberglass, gelcoat, and vinyl.