ARC Raiders: How to Use Dockmaster’s Detector for Beachcombing Loot

How the Dockmaster’s Detector works

The Dockmaster’s Detector is only worth using for Beachcombing loot on Riven Tide, and in practice it needs two things to line up: the Beachcombing map condition and the correct search area in the dried-up Seabed in the north, especially around Zero Beach. Equip it to a quick slot, pull it into your hands, activate it, then follow the light and beeps until the signal turns into a steady green confirmation and the Dig prompt appears.

The mistake I made early was assuming it worked like a universal metal detector. It does not. I wasted durability sweeping docks, cliffs, and random shoreline paths with no payoff. Once I stopped treating it like a general loot scanner and started using it only in the northern Seabed, the whole system clicked and the runs became much more efficient.

How to get a Dockmaster’s Detector

If you do not have the gadget yet, there are a few reliable ways to get one. The methods that have been dependable for me are progression sources first and opportunistic loot second. I would not build my plan around pure luck when the item burns through durability as quickly as it does.

• Complete the Shoring Up Defenses quest.
• Progress the Avian Alarm project far enough to place the first bird trap.
• Loot one from containers or from other players during Beachcombing runs.

If your only goal is to start beachcombing as soon as possible, the quest and project routes are much cleaner than hoping for a lucky container drop. Random loot can happen, but it is not the method I would recommend planning around.

Where the detector actually works

This is the step most people get wrong, because the gadget will still let you activate it even when you are in the wrong place. The detector is for buried Beachcombing treasure in the northern Seabed area of Riven Tide. If you are not in that dried-out zone, you are effectively burning stamina and durability for nothing.

The best results I have had are around Zero Beach and the surrounding exposed sand flats. I only start a real scan when I can clearly see that cracked, dried seabed terrain under me. If I am still on higher coastal ground or near structures, I keep the detector holstered and move first. That one habit alone saves a surprising amount of wear.

• Go to Riven Tide, not another map.
• Make sure the run has the Beachcombing condition active.
• Search the north, not the middle or south.
• Stay on the dried Seabed, especially near Zero Beach.

How to equip and activate it without wasting stamina

Open Inventory → Quick Slot and assign the Dockmaster’s Detector there. Once you are in the Seabed, swap to it so your character is holding it, then use your normal Activate/Use input to start scanning. The important detail is that scanning drains stamina continuously while active. If you leave it running while jogging across a wide area, you will arrive at the actual dig spot with a half-empty stamina bar and poor options if a fight breaks out.

What finally worked for me was scanning in short bursts. I activate it, take a reading, move a few steps, deactivate, reposition, then activate again. That does three things at once: it preserves stamina, it helps me isolate the direction of the signal more cleanly, and it keeps me from tunnel-visioning so hard that I miss enemies or mines.

Durability is the second limiter. The Dockmaster’s Detector degrades far faster than most gadgets. I have had runs where a detector went from “comfortably usable” to “probably not making it through another search” much sooner than expected. If Beachcombing is the entire purpose of the raid, I bring a backup or I leave as soon as I get the finds I came for.

How to read the light and sound correctly

The detector gives you both a visual and audio readout, and you want to use both. At first you will usually get an orange or yellow light and intermittent beeping when treasure is somewhere nearby. As you move closer, the beeps get faster and the pitch rises. That is your signal to slow down, not speed up. Rushing the last few meters is how I kept overshooting the spot and circling back like an idiot.

When you are directly over the buried point, the indicator settles into a steady green and the game gives you the Dig prompt. Use your normal Interact input there. If you are getting rapid beeps but no green confirmation, make smaller movements. Side-step a little, stop, and check again. Think of the last part as tightening a circle rather than running a straight line.

The breakthrough for me was treating each scan like a narrowing funnel. First pass tells me whether the area is worth working. Second pass tells me which direction is hotter. Third pass is a small adjustment for the green lock. If you keep your movement tight once the beeps accelerate, the detector becomes very consistent.

The safest way to run a Beachcombing loop

Beachcombing looks relaxed on paper, but it is one of the easiest activities to get punished in because you are staring at the ground, burning stamina, and advertising that you are carrying something worth stealing. My cleanest runs follow the same rhythm every time.

• Enter the northern Seabed with an exit route already in mind.
• Clear your immediate area before you ever pull out the detector.
• Scan in short bursts while moving in a shallow zig-zag across the sand.
• When the beeps speed up, slow to short side-steps and small forward taps.
• Check ridgelines and open sightlines before committing to the dig prompt.
• Loot fast, reassess the noise you just made, then move off the exact spot.

That last step matters more than people think. I used to finish a dig and then sort my inventory on the same patch of sand. That is asking to get caught by another raider who heard the activity or saw me standing still. Dig, grab, move twenty or thirty meters, then manage your loot if you really need to.

How to avoid the common Beachcombing hazards

Not every successful dig gives you a clean reward. Buried finds can include hazards, and if you play like every green signal is a free payout, you will eventually get punished.

Live mines

Live mines are the reason I never sprint directly onto a hot signal once it starts peaking. If a mine comes up, the fix is simple but has to be immediate: create space first. Do not stand over the dig site trying to identify what spawned. Backpedal or angle away, get your bearings, then deal with it from safety. The detector makes you feel like the danger is over once you hit green; in reality, green only means you found something buried.

ARC Ticks

ARC Ticks are the other trap that turns greedy runs into messy ones. If a dig kicks one up, I stop thinking about loot entirely and switch to clearance mode. Keep a little distance, use the open Seabed to your advantage, and do not let the tick force you into a panic strafe over other buried threats. The flat terrain helps if you stay calm, but it is also unforgiving if you flail.

Other players

The most dangerous part of Beachcombing is still other raiders. Anyone who knows the mechanic knows roughly where detector users will be. That means the northern Seabed attracts the same kind of players every time: loot runners, ambushers, and people looking for easy third-party kills. I never scan with my back to a long open lane, and I avoid digging beside obvious elevation where someone can watch the flats. If the area feels contested, one good find is enough. Staying for a second or third is usually where the raid goes bad.

What loot makes the detector worth bringing

The detector is worth using because the Beachcombing pool can pay out items that are genuinely useful instead of just novelty junk. The headline reward most players care about is Ship Models, since they matter for progression, especially the Avian Alarm project. You can also pull other valuables and trinket-style loot from buried spots, so even non-project runs can pay off if the zone is quiet.

• Ship Models for project progression.
• General buried valuables and trinkets.
• Hazard spawns instead of loot, which is why every dig needs caution.

What I would not do is assume every detector run should be a full clear of the entire Seabed. Because stamina and durability both drain while you work, the better mindset is targeted extraction. Get a couple of strong finds, especially if one is a Ship Model, and start thinking about leaving rather than squeezing every last signal out of a nearly broken tool.

Mistakes that waste detectors fast

• Scanning outside the northern dried Seabed.
• Trying to use it when the Beachcombing condition is not active.
• Leaving it active while crossing large empty stretches.
• Sprinting on fast beeps and overshooting the dig point.
• Digging without first checking for sightlines, mines, or roaming enemies.
• Staying on the dig site to sort loot instead of relocating.

If you avoid those six mistakes, the Dockmaster’s Detector stops feeling inconsistent. The tool is actually very readable once you use it in the right place, in short scanning windows, and with enough discipline to treat each dig as a possible fight instead of a guaranteed reward.

The practical loop is simple: get the detector through quests, projects, or loot; bring it to Riven Tide during Beachcombing; search the northern Seabed near Zero Beach; follow orange and yellow readings until they tighten into green; dig carefully; clear hazards immediately; and leave before stamina, durability, or player pressure turns a good run into a bad one.