The Dexter Russell Sani-Safe slices through a yellowtail snapper. The blade is full width for most of its length, giving it good flex for filleting and enough strength to cut bones.

Sashimi at sunset? Snapper sandwiches for lunch? With a seafood smorgasbord blowing bubbles just beneath your keel, a good fillet knife is a must.

Practical Sailor rounded up 10 fillet knives from several marine retailers, with blade lengths ranging from 6 to 9 inches and prices running from a low of $10 to just under $40.

We used each knife to fillet a fish or two and rated its grip, sharpness, strength, and blade flexibility. Strength is determined by the thickness of the blade and its material. Hand in hand with strength is flexibility, again determined by thickness and material as well as blade taper. These are major factors in…