X Mark merchandise collection
X MARK STORE

Maritime Gear & Books

Wear the mission. Read the legends.

Flagship Product

Built for extreme maritime conditions

X Mark Extreme Maritime Jacket
Flagship
USCG Type III PFD

X Mark Extreme Maritime Fall Weather Jacket

The ultimate offshore safety jacket with built-in CO2 inflatable flotation device, automatic water-activation, and manual pull tab. Waterproof YKK zippers, reinforced storm cuffs, and reflective X Mark branding.

  • Built-in CO2 inflatable flotation
  • Auto water-activation + pull tab
  • USCG Type III PFD compliant
  • Waterproof YKK zippers
  • Reinforced storm cuffs & collar
  • Reflective X Mark branding
  • Inner fleece lining
  • Safety Orange, Navy, Black
$349.00

Maritime Apparel

Official X Mark expedition gear

X Mark Maritime Hoodie
Best Seller

X Mark Maritime Hoodie

$89.00
X Mark Maritime T-Shirt
New

X Mark Maritime T-Shirt

$42.00
X Mark Maritime Baseball Cap

X Mark Maritime Baseball Cap

$38.00
X Mark Large Yeti Tumbler
Limited

X Mark Large Yeti Tumbler

$65.00

Treasure Hunter's Bookstore

Curated by the X Mark team

Books our team has read, referenced, and recommends to anyone serious about maritime treasure recovery. All links open to purchase pages on Amazon or the publisher's store.

Shadow Divers

Shadow Divers

Editor's Pick

Robert Kurson · 2004

True Adventure / Wreck Diving

4.8(18,400+)
Ship of Gold in the Deep Blue Sea

Ship of Gold in the Deep Blue Sea

Classic

Gary Kinder · 1998

Maritime History / Treasure Recovery

4.7(3,200+)
The Treasure Diver's Guide

The Treasure Diver's Guide

Essential Reference

J.S. Potter · 1988

Reference / Salvage Techniques

4.6(890+)
The Shipwreck Hunter

The Shipwreck Hunter

Modern Classic

David L. Mearns · 2017

Memoir / Marine Exploration

4.5(1,100+)
For Love and Treasure

For Love and Treasure

Insider Story

Kim Fisher · 2022

Biography / Treasure Hunting

4.7(640+)
The Sea Hunters

The Sea Hunters

Fan Favorite

Clive Cussler & Craig Dirgo · 1996

Adventure / Maritime History

4.6(4,800+)
Sinkable

Sinkable

New Release

Daniel Stone · 2022

Science / Maritime History

4.4(2,100+)
In the Wake of Galleons

In the Wake of Galleons

Specialist Guide

Robert F. Marx · 1993

Underwater Archaeology / Galleons

4.5(520+)

Build Your Expedition Library

Knowledge is the most valuable treasure. These books represent decades of hard-won expertise in maritime salvage, underwater archaeology, and treasure recovery.

X Mark Store — Launching Soon

Our full e-commerce store with secure checkout is in development. All apparel items are available for pre-order — contact us to reserve yours today.