A dive knife is an essential part of any diver’s gear that offers peace of mind in case of entanglement and serving as a practical tool for cutting, prying, or signaling. At Captain Hook’s, we carry a trusted selection of stainless steel and titanium dive knives, shears, and line cutters designed for durability in saltwater conditions.

Choose from compact blades for travel and warm-water diving, or rugged full-size options for wreck and spearfishing dives. Our knives come from top brands like Cressi, Aqua Lung, and Mares, with mounting options for BCDs, hoses, or ankles.

NOTE: Prices here are ONLINE ONLY. In-Store pricing may differ. 

Common Questions about Dive Knives

Why invest in a higher‑grade dive knife instead of the cheapest stainless option?

Better alloy and finish resist surface rust and edge degradation, lowering maintenance time and replacement cycles common with economy blades that quickly pit.

What routine keeps my knife from rusting and preserves resale value?

Rinse, dry, lightly abrade early surface rust if needed, then apply a thin protective oil film; these quick steps arrest corrosion before pitting sets in.

Is minor surface rust a defect requiring return?

Light flash rust is normal even on quality “stainless” and is easily removed with fine abrasive and a protective coat, so it’s typically a maintenance step not a product failure.

Oil, silicone, or specialty inhibitor – what’s the smart choice?

Any thin hydrophobic barrier (general purpose oil, dedicated corrosion inhibitor) applied sparingly after drying reduces oxygen/moisture contact and slows recurrence, extending useful life.

Do I need a backup or line‑cutter?

A secondary cutting tool mitigates entanglement risk if the primary corrodes or is dropped. It’s cheap insurance versus lost dive time or safety incidents.