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Marine Locks & Security Hardware

Marine Locks & Security Hardware

Shop Boat Locks & Marine Security Hardware

Find marine locks, hatch locks, cabin door locks, keyed padlocks, security cables, outboard motor locks, and theft-deterrent hardware for boats, tenders, trailers, and onboard gear. Browse corrosion-resistant security parts built for wet, saltwater, and dockside environments.

Shop Locks & Security Marine Padlocks Outboard Motor Locks
Security Tip

Match the lock style to the item you need to protect, then confirm shackle size, cable length, mounting style, and material.

Shop Security Cables

Always confirm dimensions, keying, mounting pattern, and material compatibility before replacing existing marine locks or hardware.

Hatch Locks Cabin Door Locks Marine Padlocks Outboard Locks Propeller Locks Security Cables Cam Locks Hasps Keyed Alike

Browse Fast

Shop by Security Category

Choose the lock or security hardware that matches your hatch, cabin, locker, outboard, trailer, tender, or onboard equipment.

All Locks & Security Hatch Locks Cabin Door Locks Padlocks Outboard Locks Security Cables Locker Locks

Why It Matters

Marine Security Hardware Protects Gear and Access Points

Boat locks help protect hatches, cabin doors, lockers, tenders, outboards, trailers, and valuable onboard equipment from theft or unauthorized access.

Marine-grade security hardware uses corrosion-resistant metals, sealed mechanisms, and weather-ready finishes that hold up better around spray, sun, and dockside exposure.

KEY

Match the Lock Style

Use hatch locks for deck access, cabin locks for doors, cam locks for panels, and padlocks or cables for movable gear and general security.

FIT

Check Size and Mounting

Confirm shackle clearance, cable diameter, body width, cam length, latch throw, screw pattern, and panel thickness before ordering replacements.

SEA

Choose Marine Materials

Look for stainless steel, brass, chrome-plated brass, coated cable, weather seals, and UV-resistant finishes for longer service life on the water.

Parts Desk Guidance

Replacing a Lock or Adding Security?

If you are replacing existing hardware, match the dimensions and mounting pattern first. If you are adding security to gear or equipment, start with what needs to be protected and where it will be stored, then choose the right padlock, cable, hasp, or specialty lock.

Choose hatch or cabin locks For boat access points, deck hatches, cabin doors, sliding hatches, lockers, and storage compartments.
Choose outboard or propeller locks For theft deterrence on removable outboards, propellers, dinghies, and exposed equipment.
Choose padlocks and security cables For flexible protection of trailers, tenders, dock boxes, cockpit gear, and portable equipment.
Choose keyed alike options For multiple locks that need to operate from one key, especially across lockers, hatches, and gear storage.

Common Questions

Marine Locks & Security Buying Help

What type of lock should I use on a boat hatch?

Use a hatch lock, cam lock, or latch-style marine lock that matches the hatch thickness, mounting pattern, latch reach, and exposure level. Corrosion-resistant materials are important for deck and cockpit locations.

Are regular padlocks okay for marine use?

Marine padlocks are a better choice because they are built with corrosion-resistant materials and weather-ready mechanisms. Standard padlocks can rust, seize, or become difficult to operate in saltwater environments.

How do I secure an outboard motor?

Use an outboard motor lock or heavy-duty security cable designed for the motor size and mounting style. Confirm that the lock fits the clamp, bracket, transom setup, or engine hardware before ordering.

What does keyed alike mean?

Keyed alike locks are multiple locks that open with the same key. They are useful when you want one key for several lockers, hatches, padlocks, or storage areas on the same boat.

Ready to Find Your Part?

Search Marine Locks, Padlocks & Security Hardware

Use the collection page or search by lock type, application, material, size, or keying style to find the right security hardware for your boat.

Shop All Locks & Security Hatch Locks Marine Padlocks Outboard Locks

Filters

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Seachoice Solid Brass Padlock, 1.5 in., Includes 2 Keys

Seachoice Solid Brass Padlock, 1.5 in., Includes 2 Keys

$24.39 - $24.39
$24.39
$24.39 - $24.39
$24.39
In stock

Seachoice Solid Brass Padlocks are ideal for harsh marine environments. The internal mechanism won't rust. Our padlocks won't shatter when attacked...

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$24.39 - $24.39
$24.39
$24.39 - $24.39
$24.39
Seachoice Solid Brass Padlock, 2 in., Includes 2 Keys

Seachoice Solid Brass Padlock, 2 in., Includes 2 Keys

$37.49 - $37.49
$37.49
$37.49 - $37.49
$37.49
In stock

Seachoice Solid Brass Padlocks are ideal for harsh marine environments. The internal mechanism won't rust. Our padlocks won't shatter when attacked...

View full details
$37.49 - $37.49
$37.49
$37.49 - $37.49
$37.49
Seachoice 37301 1-1/4" Keyed-Alike Solid Brass Padlocks (3 Per Card)

Seachoice 37301 1-1/4" Keyed-Alike Solid Brass Padlocks (3 Per Card)

$56.19 - $56.19
$56.19
$56.19 - $56.19
$56.19
In stock

Solid brass body and hasp with 2 nickel plated brass keys. The three pack contains keyed alike locks.

$56.19 - $56.19
$56.19
$56.19 - $56.19
$56.19
Seachoice 37311 1-1/2" Keyed-Alike Solid Brass Padlocks (3 Per Card)

Seachoice 37311 1-1/2" Keyed-Alike Solid Brass Padlocks (3 Per Card)

$70.99 - $70.99
$70.99
$70.99 - $70.99
$70.99
In stock

Solid brass body and hasp with 2 nickel plated brass keys. The three pack contains keyed alike locks.

$70.99 - $70.99
$70.99
$70.99 - $70.99
$70.99
Trimax TDL1510 Dual Loop Quadra Braid Trimaflex Cable, 15' L x 10mm

Trimax TDL1510 Dual Loop Quadra Braid Trimaflex Cable, 15' L x 10mm

$36.59 - $36.59
$36.59
$36.59 - $36.59
$36.59
In stock

The Trimax TDL1510 Trimaflex Dual Loop Quadra Braid Cable is a heavy-duty flexible steel security cable for securing outdoor equipment, trailers,...

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$36.59 - $36.59
$36.59
$36.59 - $36.59
$36.59
Seachoice Solid Brass Padlock, 2 in., Set of 3 Keyed Alike

Seachoice Solid Brass Padlock, 2 in., Set of 3 Keyed Alike

$91.37 - $91.37
$91.37
$91.37 - $91.37
$91.37
In stock

Seachoice Solid Brass Padlocks are ideal for harsh marine environments. This is a set of 3 keyed-alike padlocks. The internal mechanism won't rust....

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$91.37 - $91.37
$91.37
$91.37 - $91.37
$91.37
Seachoice Solid Brass Padlock, 1.25 in., Includes 2 Keys

Seachoice — Solid Brass Padlock 1-1/4" — 50-37201

$0.00 - $0.00
$0.00
$19.19
$19.19 - $19.19
$19.19
In stock

Seachoice Solid Brass Padlocks are ideal for harsh marine environments. The internal mechanism won't rust. Our padlocks won't shatter when attacked...

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$0.00 - $0.00
$0.00
$19.19
$19.19 - $19.19
$19.19

SeaLock Marine Padlock Set - 3 Pack - 30mm (1-3/16") - Keyed Alike - Chrome Plated Brass

$60.92 - $60.92
$60.92
$60.92 - $60.92
$60.92
in stock

SeaLock Marine Padlock Set - 3 Pack - 30mm - Keyed AlikeConvenient 3-pack set of premium marine padlocks designed specifically for saltwater enviro...

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$60.92 - $60.92
$60.92
$60.92 - $60.92
$60.92

SeaLock Marine Padlock - 50mm (1-62/64") - Long Shackle - Chrome Plated Brass - Stainless Steel

$63.20 - $63.20
$63.20
$63.20 - $63.20
$63.20
in stock

SeaLock Marine Padlock - 50mm - Long Shackle - Chrome Plated BrassPremium marine padlock with extended long shackle designed specifically for saltw...

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$63.20 - $63.20
$63.20
$63.20 - $63.20
$63.20

SeaLock Marine Padlock - 40mm (1-37/64") - Long Shackle - Chrome Plated Brass - Stainless Steel

$38.84 - $38.84
$38.84
$38.84 - $38.84
$38.84
in stock

SeaLock Marine Padlock - 40mm - Long Shackle - Chrome Plated BrassPremium marine padlock with extended long shackle designed specifically for saltw...

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$38.84 - $38.84
$38.84
$38.84 - $38.84
$38.84

SeaLock Marine Padlock - 30mm (1-12/64") - Long Shackle - Chrome Plated Brass - Stainless Steel

$28.82 - $28.82
$28.82
$28.82 - $28.82
$28.82
in stock

SeaLock Marine Padlock - 30mm - Long Shackle - Chrome Plated BrassPremium marine padlock with extended long shackle designed specifically for saltw...

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$28.82 - $28.82
$28.82
$28.82 - $28.82
$28.82

SeaLock Marine Padlock - 25mm (63/64") - Long Shackle - Chrome Plated Brass - Stainless Steel

$23.01 - $23.01
$23.01
$23.01 - $23.01
$23.01
in stock

SeaLock Marine Padlock - 25mm - Long Shackle - Chrome Plated BrassPremium marine padlock with extended long shackle designed specifically for saltw...

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$23.01 - $23.01
$23.01
$23.01 - $23.01
$23.01

SeaLock Marine Padlock - 60mm (2-23/64") - Chrome Plated Brass - Stainless Steel Shackle

$66.65 - $66.65
$66.65
$66.65 - $66.65
$66.65
in stock

SeaLock Marine Padlock - 60mm - Chrome Plated BrassPremium marine padlock designed specifically for saltwater environments. This SeaLock features c...

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$66.65 - $66.65
$66.65
$66.65 - $66.65
$66.65

SeaLock Marine Padlock - 50mm (1-62/64") - Chrome Plated Brass - Stainless Steel Shackle

$49.83 - $49.83
$49.83
$49.83 - $49.83
$49.83
in stock

SeaLock Marine Padlock - 50mm - Chrome Plated BrassPremium marine padlock designed specifically for saltwater environments. This SeaLock features c...

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$49.83 - $49.83
$49.83
$49.83 - $49.83
$49.83

SeaLock Marine Padlock - 40mm (1-37/64") - Chrome Plated Brass - Stainless Steel Shackle

$28.82 - $28.82
$28.82
$28.82 - $28.82
$28.82
in stock

SeaLock Marine Padlock - 40mm - Chrome Plated BrassPremium marine padlock designed specifically for saltwater environments. This SeaLock features c...

View full details
$28.82 - $28.82
$28.82
$28.82 - $28.82
$28.82

SeaLock Marine Padlock - 30mm (1-12/64") - Chrome Plated Brass - Stainless Steel Shackle

$23.01 - $23.01
$23.01
$23.01 - $23.01
$23.01
in stock

SeaLock Marine Padlock - 30mm - Chrome Plated BrassPremium marine padlock designed specifically for saltwater environments. This SeaLock features c...

View full details
$23.01 - $23.01
$23.01
$23.01 - $23.01
$23.01

SeaLock Marine Padlock - 25mm (63/64") - Chrome Plated Brass - Stainless Steel Shackle

$18.12 - $18.12
$18.12
$18.12 - $18.12
$18.12
in stock

SeaLock Marine Padlock - 25mm - Chrome Plated BrassPremium marine padlock designed specifically for saltwater environments. This SeaLock features c...

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$18.12 - $18.12
$18.12
$18.12 - $18.12
$18.12

Hatch Lock - Stainless Steel - Marine Deck Hatch Security - Locking Mechanism

$16.38 - $16.38
$16.38
$16.38 - $16.38
$16.38
in stock

Hatch Lock - Stainless Steel - Marine Deck Hatch SecurityStainless steel locking mechanism designed for marine deck hatches. This lock provides sec...

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$16.38 - $16.38
$16.38
$16.38 - $16.38
$16.38