Acquiring the Marine Armor in Fallout 4 is one of the most rewarding pursuits for players looking to maximize their defensive capabilities outside of Power Armor. Introduced in the Far Harbor expansion, this heavy-duty military suit offers unmatched damage and energy resistance across the island's hazardous environments. Finding every piece requires traversing dangerous coastal waters and solving key quest objectives tied to the main narrative.
Unlocking the Marine Armor Quest
Before the shipment containers containing the complete suit will spawn off the coast of Far Harbor, players must advance through the main storyline. Progressing through DiMA's memory retrieval puzzles in the quest Best Left Forgotten is mandatory to reveal the hidden locations. Unlocking the fifth and final memory triggers a miscellaneous quest marker that directs you directly to three underwater wreckage sites.
Preparing for these salvage operations requires proper gear or specific perks to handle deep underwater exploration. Equipping the Aquaboy or Aquagirl perk eliminates radiation damage and allows you to breathe under water indefinitely while searching the sea floor. Alternatively, consuming Mirelurk cake or using specialized consumables can help survive the diving trips if perks are unavailable.
Locating the Sunken Steamer Trunks
The full set of Assault Marine Armor is split among three submerged steamer trunks scattered along the coast. To retrieve the chest piece and helmet, travel southwest of Rayburn Point and dive near a sunken shipping container sitting on the seabed. Open the container inside to grab both vital protective pieces along with a tactical wetsuit.
The remaining limb pieces are situated near other maritime wrecks off the island's shores. Heading west of Haddock Cove leads to a sunken vessel containing a crate with both the left and right leg armor pieces. Finally, swimming east from the Harbor Grand Hotel reveals another ship deck where a trunk holds the left and right arm guards.
Alternative Ways to Obtain Marine Armor Variants
If you prefer not to wait until late-game quests, alternative variants of the armor can be purchased from vendors across the island. Vendors in the Nucleus, such as Brother Kane, frequently stock Zealot and standard Marine armor pieces for caps. Buying these pieces offers immediate protection without requiring players to complete DiMA's memory puzzle challenges first.
For players seeking legendary variants, local merchants sell specialized Recon Marine armor parts that feature unique passive buffs. Brooks in Far Harbor sells the legendary helmet, while Cog in Acadia offers the enhanced chest piece. Combining these legendary purchases with the recovered underwater set gives you total flexibility in creating the ultimate protective build.
