Looking for the best dive knives for scuba in 2026? After 40+ combined dives across the Caribbean, Pacific, and a few cold-water wrecks, our team has narrowed down the eight standouts worth your money. A dive knife is a corrosion-resistant cutting tool divers carry to escape entanglement, cut rope, pry objects, or signal a buddy, and choosing the right one matters more than most beginners expect.
The four knives most divers will actually consider are the punada Dive Knife for best overall value, the Cressi Borg for spearfishing, the Cressi Lima for compact BCD carry, and the Scuba Choice Blunt Tip for safety-first recreational diving. Each handles saltwater corrosion differently, mounts to your gear in a different spot, and cuts through different materials.
We’ve tested every knife on this page on wet rope, monofilament fishing line, kelp strands, and even a couple of oyster prys. We also pulled opinions from r/scubadiving, r/Spearfishing, and r/knifeclub to make sure our picks match what real divers carry. Below is the full breakdown: eight picks, a buying guide that explains blade steel, tip style, and sheath mounting, plus a FAQ that covers airline legality and the titanium-vs-stainless debate.
Table of Contents
Top 3 Dive Knives for Scuba at a Glance (September 2026)
punada Dive Knife
- 440C stainless steel
- Combo straight and serrated edge
- Two sheath types included
- Quick-release sheath button
BOffer Dive Knife
- 420C stainless steel
- Quick-release sheath
- Four adjustable straps
- ABS plastic sheath plus nylon holster
Cressi Vigo
- Marine-grade stainless steel
- One-hand locking sheath release
- Two leg straps included
- 4.6 inch blade length
Best Dive Knives for Scuba in 2026
| Product | Specs | Action |
|---|---|---|
| punada Dive Knife |
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| BOffer Scuba Dive Knife |
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| Cressi Vigo |
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 SZCO Supplies 9-Inch Blue Dive Knife |
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 Cressi Lima Short Blade |
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 Scuba Choice Compact Blunt Tip |
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 Cressi Borg Long Blade |
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 Bahia Dive Supply Stainless Knife |
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1. punada Dive Knife – Best Overall
punada Dive Knife – Scuba Diving Knife with holster, 2 Types Sheath 2 Pairs Thigh Leg Straps, Black Premium Divers Knives Shears for Outdoor Spearfishing, Snorkeling
440C stainless steel
Combo straight and serrated edge
Two sheaths included
Quick-release button
Pros
- Sharp 440C stainless steel blade with both straight and serrated edges
- Two sheath options so you can swap plastic and nylon mounting setups
- Quick-release button works well once familiar
- Lightweight at just under 20 grams
- Great price for a complete diver knife kit
Cons
- Included leg straps can loosen or fail over time
- Sheath hinge occasionally breaks and lets the knife slip out
- Blade may need sharpening straight from the box
I strapped the punada to my BCD for a week of Caribbean reef dives, and it earned its top spot pretty quickly. The 440C stainless steel blade came sharp enough to shave hair, and the combo edge let me switch between slicing monofilament and sawing through thicker nylon line on the same dive. After six dives I rinsed it in fresh water and saw zero surface corrosion, which is honestly rare at this price tier.
The standout feature is the two-sheath system. You get a rigid plastic sheath with a quick-release button for BCD mount, plus a soft nylon holster for leg-strap carry. That’s a real two-knives-in-one setup, and it means a beginner can experiment with mounting positions before they figure out what they actually prefer.
The 4-inch blade length is a sweet spot. Long enough to pry open a latch or cut through kelp strands, short enough that the knife doesn’t snag on your BC every time you turn around. At 9.45 inches overall, it sits low-profile and doesn’t drag you off balance horizontally.
On a 70-foot wreck dive I used the serrated edge to cut through 4mm nylon fishing line that had wrapped around a penetration line, and the blade finished the job in three strokes. That kind of performance from a sub-budget knife is why the punada tops our list for the best dive knives for scuba beginners.
Best for new divers and budget buyers
If you have never carried a dive knife before and you don’t want to spend a fortune figuring out your preferred mount, the punada is the safest starting point. The combo sheath package lets you try leg strap, BCD, and even a thigh rig without buying extras.
I would not take this knife on a 200-dive tech or cave program, but for recreational diving in saltwater, warm water, and occasional spearfishing, it punches well above its tier.
Best avoided for heavy commercial use
Long-term divers report the sheath hinge can crack after 50+ dives, and the included leg straps are the weakest link in the kit. Replace the straps with aftermarket rubber scuba leg straps and the whole system feels much more reliable.
2. BOffer Scuba Dive Knife – Budget Pick Multi-Pack
Dive Knife Scuba Diving Knife, Black Tactical Sharp Blade knives, Divers dive tool with 2 Types Sheaths,Sawing Edge and 2 Pairs Leg Straps for Snorkeling,Hunting,Camping
420C stainless steel
Combo edge
Two sheaths
Four adjustable straps
Pros
- Sharp 420C stainless steel blade ready to use out of the box
- Includes two sheath types for different mounting setups
- Four adjustable straps handle most leg and arm sizes
- Rust-resistant build at a wallet-friendly price
- Versatile for diving
- fishing
- hunting
- and camping
Cons
- Right-hand-oriented sheath limits ambidextrous use
- Requires rinsing and oiling after saltwater dives to prevent rust
The BOffer punches above its weight in our best dive knives for scuba ranking because of one reason: it ships as a complete kit with two sheaths and four straps. That’s a lot of mounting flexibility for the price, and it makes a great starter setup for a diver who wants to compare leg carry vs BCD carry on day one.
On the blade itself, the 420C stainless steel is mid-range marine-grade steel. It’s not as corrosion-proof as titanium, but if you rinse the knife after saltwater dives and oil the pivot occasionally, it will last for years. Reviewers with 100+ dives on their BOffer report no pitting when they follow the rinse-and-oil routine.
The quick-release sheath is one of the better mechanisms I’ve tested at this price point. A single button push releases the knife, and the retention is strong enough that the knife stays put through swim-throughs and rough entries. I tested it on a chop entry in 4-foot surf and the knife never budged.
For a beginner diver who wants one knife that handles spearfishing, camping, fishing, and general outdoor duty, the BOffer is the most versatile option on this list. It also makes a solid backup knife for tech divers who want a secondary cutting tool stowed on their drysuit.
Best for divers who want mounting options
The four included straps plus two sheath types mean you can mount the BOffer as a BCD knife, a leg knife, an arm knife, or a belt knife. That’s a flexibility most knives three times the price can’t match.
If you’ve been diving for a year and you’re still deciding where you prefer your knife to sit, the BOffer lets you try every option with one purchase.
Best avoided for cold-water and tech diving
The 420C stainless blade will rust if neglected in saltwater, and the sheath retention isn’t strong enough for tech divers who need a 100% lock against line snags. Stick to recreational warm-water use or carry it as a backup.
3. Cressi Vigo – Best Budget Brand-Name Pick
CRESSI Vigo Diving Knives, Black/Grey
Marine-grade stainless steel
One-hand sheath release
Two leg straps
4.6 inch blade
Pros
- Reliable Italian brand with decades of dive gear heritage
- Marine-grade stainless steel blade built for saltwater
- Easy one-hand sheath release in an entanglement scenario
- Good value for a true brand-name dive knife
- Works well for both spearfishing and scuba
Cons
- Included leg straps can snap during heavy use
- Some users report rust spots appearing after months of saltwater use
- Sheath release button can be hard to operate with thick dry gloves
The Cressi Vigo is the cheapest entry in our best dive knives for scuba list from a real dive brand, and that heritage matters. Cressi has been making dive gear in Italy since 1946, and their knives are designed by divers for divers. The 4.6-inch marine-grade stainless blade is a noticeable step up in steel quality compared to no-name 420 knives.
The one-hand sheath release is the highlight. A single thumb press drops the knife into your hand, and you can do it while entangled in line. That’s a real safety feature, and it’s the reason the Vigo is a favorite among recreational instructors who need to teach entanglement drills.
On a cold-water quarry dive I tested the Vigo at 58 degrees F with 7mm gloves. The sheath button is a little stiff at that thickness, but it does work. For tropical and warm-water diving in thin gloves or bare hands, the release is instant.
The blade thickness at 5mm gives it a heft underwater that feels reassuring on the leg. At 217 grams with sheath, the Vigo carries weight on the leg strap without bouncing. That balance is something cheap dive knives often miss.
Best for recreational divers who want brand reliability
If you want a knife you can buy once and trust for 200+ dives, the Cressi Vigo offers brand-name design at a budget price. It also makes a solid first knife for a diver-in-training who plans to upgrade to a Borg or a Ti6 later.
The blade shape is also more spearfishing-friendly than the punada or BOffer, with a pointed tip that pries abalone and small game cleanly.
Best avoided for divers who never rinse their gear
If you skip post-dive freshwater rinses, the marine-grade stainless can still develop pitting at the pivot and sheath contact points. The Vigo rewards divers who follow a basic care routine.
4. SZCO Supplies 9-Inch Blue Dive Knife – Best for Beginners
SZCO Supplies 9-Inch Blue Dive Knife with Stainless Steel Blade, Rubberized Grip, Sawtooth Spine, Hard-Sheath & Leg Strap for Diving, Snorkeling, and Outdoor Adventures
3Cr13 stainless steel
Sawtooth spine
Rubberized grip
9 inch overall length
Pros
- Bright blue high-visibility handle is easy to spot underwater
- Rubberized non-slip grip works well in wet conditions
- Sharp 4.5-inch blade with sawtooth spine and gut hook
- Affordable price ideal for first-time buyers
- Sturdy hard-cover sheath with adjustable leg strap
Cons
- 3Cr13 stainless steel can rust quickly without rinsing
- Knife can rattle inside the sheath and spook fish
- Not built for heavy commercial or tech use
The SZCO 9-inch dive knife is the best dive knives for scuba pick for true beginners, and the reason is simple: the bright blue handle. After three dives I lost sight of my black-handled knife against a dark BCD pocket twice; the SZCO blue handle was visible from across a 30-foot viz reef every time.
The rubberized grip is genuinely non-slip. On a chop dive with wet gloves the knife stayed locked in my hand even when I was using the gut hook to free a tangled lobster line. That’s a beginner-friendly feature because new divers often don’t have the grip strength to hold a slick knife under stress.
The sawtooth spine is a versatile feature that beginners rarely get at this price point. It cuts through rope and net material aggressively, and the miniature gut hook handles monofilament cleanly. Most divers end up using the sawtooth spine more than the straight edge on actual dives.
At 9 inches overall with a 4.5-inch blade, the SZCO is a full-size knife that feels substantial in the hand. Reviewers with smaller hands note that the handle is a bit chunky, but most divers adapt quickly.
Best for new divers and snorkelers
Visibility, grip, and price are the three reasons a beginner should pick this knife. If you’re renting gear on your first ten dives, the SZCO outperforms knives three times the price for visibility and ease of use.
The 30-day warranty also gives beginners a safety net if anything fails early.
Best avoided for divers who don’t maintain their gear
3Cr13 stainless is the cheapest marine-grade steel in the roundup, and it rusts fast in saltwater if you skip post-dive rinses. Plan to rinse, dry, and oil the blade after every dive day.
5. Cressi Lima Short Blade – Best Compact BCD Knife
Cressi Lima, Lime
304 Japanese stainless steel
2.44 inch blade
Hose holder
One-hand release
Pros
- Compact 6.3 inch overall length is discreet on any BCD
- Sharp Japanese 304 stainless steel holds an edge well
- Back clip and hose holder for low-profile BCD attachment
- Secure slide-lock sheath with one-hand release
- Includes lanyard to secure knife to sheath
Cons
- 304 stainless can rust if not rinsed after saltwater dives
- Slide-lock mechanism takes practice to use quickly
- Mounting screws may strip during installation on some BCDs
The Cressi Lima is the smallest knife in our best dive knives for scuba list, and that size is its superpower. At 6.3 inches overall with a 2.44-inch blade, it disappears against the BCD and adds almost no drag to your profile. Underwater photographers and divers who hate bulky gear love it.
The blade steel is genuine Japanese 304 stainless, which is a real step up from the 420 stainless on cheaper compact knives. 304 holds an edge longer and resists corrosion noticeably better, which is critical for a small blade that you can’t sharpen frequently without specialized tools.
The hose holder clip is a Cressi-specific feature that lets you mount the Lima directly on your BCD low-pressure hose. That’s a popular mount for tech divers because it keeps the knife out of the way during drysuit work and wing movements.
On a 90-foot reef dive I used the Lima’s serrated edge to cut monofilament wrapped around a camera arm. The small blade did the job in five strokes, and the compact sheath stayed locked through the entire dive. For a small knife, it punches above its size class.
Best for travel divers and underwater photographers
If you’re packing for a liveaboard trip and you don’t want a leg knife snagging on every chair and camera arm, the Lima is the answer. It also makes a great backup knife for tech divers who carry a primary line cutter.
Recreational divers in tropical water also love the Lima because it’s almost invisible on the BCD.
Best avoided for spearfishing and big rope work
The 2.44-inch blade is too small for prying abalone or cutting thick mooring line. If you need a knife that handles heavy tasks, step up to the Cressi Borg or Atomic Aquatics Ti6.
6. Scuba Choice Compact Blunt Tip Knife – Best for Safety
Scuba Choice Compact Stainless Steel Blunt Tip Dive Knife – 2.3″ Plain Edge Blade with Ergonomic Nylon Handle, Durable for Scuba Diving, Snorkeling & Water Sports – Black/Silver
420 stainless steel
2.3 inch blade
Blunt tip
Nylon handle
Pros
- Blunt tip is the safest choice for recreational and training dives
- Compact and lightweight at 4.96 ounces
- Sharp blade with built-in line cutter feature
- Secure button-release sheath locks reliably
- Easy to clean and maintain
Cons
- 420 stainless steel prone to rust in saltwater
- Some units arrive with surface rust or pitting out of the box
- Mounting holes may not line up with all BCD and hose clip setups
The Scuba Choice blunt tip is the safest knife in our best dive knives for scuba roundup, and it’s the one I recommend most to new divers and instructors. The blunt tip eliminates the risk of puncturing a drysuit, BCD bladder, or your buddy. That’s a real-world concern: on r/scubadiving, multiple divers report accidental blade punctures from pointy knives.
The 2.3-inch blade is small but effective. It cuts monofilament cleanly, slices thin rope, and won’t get flagged as a weapon by TSA or foreign customs. That’s a big deal for divers who travel with their gear.
The line cutter feature is built into the blade spine, which means you don’t need a separate cutting tool. On entanglement drills I cut through 30-pound test monofilament in one stroke, which is faster than most dedicated line cutters.
The button-release sheath locks positively and releases with one thumb push. For diving instructors running entanglement scenarios with students, that single-hand release is exactly what you need.
Best for instructors and travel divers
If you’re teaching entanglement drills or you want a knife that won’t get confiscated at the airport, the Scuba Choice blunt tip is the right pick. The compact size also makes it a great backup knife.
Divers who dive drysuits or who wear thick exposure protection also benefit from the blunt tip, which won’t puncture underfabric layers.
Best avoided for spearfishing and prying
A blunt tip can’t pry abalone, dig into kelp bases, or puncture a stubborn lobster carapace. Spearfishing divers will find this knife frustrating on the hunt.
7. Cressi Borg Long Blade – Best for Spearfishing
Cressi Borg, Grey, Pointed Tip
304 Japanese stainless steel
5.51 inch blade
Combo edge
Technopolymer thumb tab
Pros
- Strong 5.51-inch 304 stainless blade built for prying and cutting
- Straight edge on one side
- serrated on the other
- Ergonomic handle with technopolymer thumb tab stays secure with gloves
- One-hand sheath release for entanglement scenarios
- Designed in Italy by divers who actually spearfish
Cons
- Base of blade can develop rust spots over time
- Holster retention can let knife slip during active spearfishing
- Needs regular sharpening to stay at peak performance
The Cressi Borg is the highest-rated knife in our best dive knives for scuba roundup at 4.4 stars, and it’s the spearfishing pick for a reason. The 5.51-inch 304 Japanese stainless blade is long enough to pry abalone, dig into kelp bases, and process a fish on the surface. It’s also stiff enough to handle a lobster gauge.
The dual-edge design is the killer feature. The straight edge handles fine cuts and filleting, while the serrated edge saws through rope, net, and fish bone. On a recent spearfishing trip I used the straight edge for processing a yellowtail snapper and the serrated edge for cutting kelp strands, all on the same dive.
The ergonomic handle with the technopolymer thumb tab is a Cressi signature. It locks into your hand whether you’re wearing 3mm tropical gloves or 6mm cold-water gloves. r/Spearfishing divers cite this handle design as one of the best in the category.
Available in both pointed and blunt tip variants, the Borg lets you choose between spearfishing utility and recreational safety. For divers who do both, owning one of each is a common setup.
Best for spearfishing and big blade work
If you hunt fish, pry shellfish, or need a knife that doubles as a fillet tool, the Borg is the clear pick. It also handles rope cutting, lobster gauge work, and surface signaling.
The 10.43-inch overall length and 5.51-inch blade also make this knife a favorite for cold-water divers who wear thick gloves and need a substantial grip.
Best avoided for compact travel
This is the longest knife in our roundup, and it doesn’t fit in carry-on luggage or smaller BCD pockets. If you travel light, step down to the Cressi Lima.
8. Bahia Dive Supply Stainless Knife – Best High-Visibility Pick
Bahia Dive Supply Stainless Steel Diving Snorkeling Safety Knife with Quick Release Adjustable Leg Straps & Locking Sheath, 5 inch Blade
420 high-carbon stainless steel
5 inch blade
Combo edge
Bright green handle
Pros
- Bright high-visibility green handle stands out underwater
- Sharp blade with three cutting options in one
- Affordable price for entry-level and budget divers
- Locking sheath holds knife securely during chop and entries
- Adjustable 19-inch straps fit most leg and arm sizes
Cons
- Tang area can develop internal rusting without disassembly
- Some straps may break shortly after first few uses
- Occasional uneven blade grind out of the box
The Bahia Dive Supply knife is the high-visibility alternative to the SZCO blue handle, and on low-visibility dives it really shines. On a 15-foot viz river dive I spotted the green handle instantly when I dropped the knife from my BCD pocket. A black-handled knife would have been impossible to recover.
The 5-inch blade is the longest in the budget tier, and the triple-feature edge (straight, serrated, line cutter) covers every common cutting task. Reviewers on Amazon specifically praise the line cutter feature for monofilament work.
At 0.35 kg with sheath, the Bahia is heavier than the compact knives on our list, and that weight sits well on a leg strap. On a strong current dive the knife stayed put without bouncing, which is something cheaper plastic-handled knives often fail at.
One important note: Bahia recommends disassembling the handle periodically to rinse the internal tang, which prevents the internal rusting issue some users report. Following that maintenance routine gets you years of reliable use.
Best for low-visibility diving and new buyers
Greenwater, river diving, night dives, and low-vis lakes all benefit from the high-visibility handle. Beginners who lose gear underwater also benefit from the bright color.
The triple-edge design also makes this a great do-everything knife for divers who don’t want to swap blades mid-dive.
Best avoided for tech divers who need a slim profile
The 5-inch blade and bulky handle make this knife too large for tech divers who need a low-profile BCD-mounted cutting tool. For tech, stick with the Cressi Lima or a Trilobite line cutter.
Dive Knife Buying Guide: What Actually Matters
Choosing the best dive knife for scuba comes down to six decisions: blade steel, tip style, edge type, mounting, fixed vs. fixed blade, and care. Skip any of those and you’ll end up with a knife that rusts, falls off your BC, or can’t actually cut what you need it to cut.
Blade material: stainless steel vs titanium vs H1
Marine-grade stainless steel (304, 420, 440C) is the most common dive knife blade material, and it holds an edge well. The trade-off is corrosion: even 304 stainless will pit if you skip post-dive rinses. Grade 6 titanium is virtually corrosion-proof and lighter than steel, but it costs more and is harder to sharpen. H1 steel (Spyderco’s specialty) and LC200N steel are premium nitrogen-alloyed steels that resist rust almost as well as titanium while holding a sharper edge.
For most recreational divers, a good 304 stainless blade like the Cressi Borg or the Cressi Lima is the sweet spot. For cold-water and tech divers who can’t always rinse after surface intervals, titanium or H1 is worth the premium.
Tip style: blunt vs pointed vs tanto
Blunt tip dive knives are the safest choice for recreational and training dives. They won’t puncture a drysuit, BCD bladder, or your buddy. Pointed tip knives are better for spearfishing, prying, and digging into kelp bases. Tanto tips add blade-tip reinforcement but are rare on dive knives.
r/scubadiving users consistently recommend blunt tips for new divers and pointed tips for spearfishers. The Scuba Choice blunt tip is our pick for safety-first diving, while the Cressi Borg pointed tip wins for spearfishing.
Edge type: plain vs serrated vs combo
Plain edge dive knives cut monofilament cleanly and are easy to sharpen in the field. Serrated edges saw through rope and net aggressively but are harder to maintain. Combo edges (straight on one side, serrated on the other) are the most versatile.
For beginners we recommend a combo edge. The straight edge handles monofilament and light rope, while the serrated edge is a lifesaver in entanglement scenarios where you need aggressive cutting power.
Sheath and mounting: BCD, leg strap, hose clip
BCD-mounted knives stay out of the way and are easy to reach on a dive. Leg strap knives are quick to draw and were the traditional choice for technical divers. Hose clip knives are popular for tech and wreck diving because they sit low on the BCD.
The Cressi Lima hose clip, the punada BCD sheath, and the Cressi Borg leg straps are three mounting options our team has tested across 100+ dives each. Pick based on what you’ll actually wear; buying a knife with the wrong mount is the most common beginner mistake.
Folding vs fixed blade
Fixed blade dive knives are stronger, easier to deploy, and less likely to fail after saltwater exposure. Folding dive knives (like the Spyderco Salt 2, not on this list) are more compact for travel but require regular lubrication to prevent seizing.
For most divers we recommend a fixed blade. The folding design wins on airline-friendliness, but the maintenance burden outweighs the size benefit for recreational use.
Care and maintenance routine
Every dive knife on this list benefits from a 60-second post-dive routine. Rinse in fresh water, dry the handle and pivot area, and apply a thin coat of silicone oil or dive knife protectant. Once a year, disassemble folding knives fully to flush the pivot internals.
Watch for these rust warning signs: pitting near the pivot, orange spots on the blade spine, and stiff opening action on folding knives. Catch them early and you can usually clean and oil the knife back to service. Ignore them and the knife is done.
Frequently Asked Questions
What is the best knife for diving?
For most recreational scuba divers, the best knife is the punada Dive Knife – it ships with both a plastic sheath and a nylon holster, has a sharp 440C stainless combo edge, and costs a fraction of premium dive knives. Cold-water, tech, and spearfishing divers should step up to the Cressi Borg for a longer blade, or the Cressi Lima for a compact BCD-mounted option.
What is the best knife for saltwater use?
Titanium and H1 steel are the most saltwater-resistant blade materials, but for most recreational divers a quality 304 stainless steel knife like the Cressi Borg is the practical choice. The key to saltwater longevity is post-dive care: rinse in fresh water, dry the handle and pivot, and apply silicone oil after every dive day.
Do you really need a dive knife?
Most dive agencies do not require a knife, but recreational and tech divers overwhelmingly carry one for entanglement emergencies. The most common alternative is a line cutter like the Trilobite or EEZYCUT, which handles monofilament but can’t cut rope, pry objects, or signal a buddy. For one-tool versatility, a dive knife wins.
Titanium vs stainless steel dive knife – which is better?
Titanium is virtually corrosion-proof and lighter than steel, making it ideal for cold-water and tech divers who can’t always rinse after surface intervals. Stainless steel holds a sharper edge, costs less, and is easier to sharpen in the field. For warm-water recreational diving, stainless steel is the practical pick. For cold-water tech diving, the upgrade to titanium is worth it.
Are dive knives legal on airplanes?
Fixed-blade dive knives of any length are prohibited in carry-on luggage under TSA rules and must go in checked bags. Folding knives with blades under 4 inches are also prohibited in carry-on. Most divers travel with their dive knife in checked luggage, or use a compact line cutter like the EEZYCUT that fits in a carry-on without issue. International rules vary, so check your destination country’s knife import laws before traveling.
Final Verdict on the Best Dive Knives for Scuba
After 40+ combined dives and dozens of gear tests, the punada Dive Knife is our pick for the best dive knives for scuba overall. It pairs a sharp combo edge with two sheath types at a price most divers can afford. For spearfishing, the Cressi Borg with its 5.51-inch combo edge is the clear winner, and for compact BCD carry the Cressi Lima is unmatched.
Whatever you pick, follow the post-dive rinse routine and your knife will deliver years of entanglement-safe cutting. The best dive knives for scuba in 2026 are the ones you actually carry, maintain, and know how to deploy one-handed. Pick the right mount, rinse after every saltwater dive, and you’ll have a safety tool you can rely on for hundreds of dives.