How to Protect Trade Routes in Anno 117 (And Why Escorts Keep Failing)

You set up a clean trade route, drop a couple of military ships on “escort duty,” and five minutes later the game is spamming “Ship under attack” while your trader is sailing completely alone straight into pirate fire.

If you’ve been wondering why escorts don’t stay with trade ships in Anno 117, you’re not imagining it — the system just doesn’t keep convoys together over long distances. Escorts drift, chase targets, or out-speed the trader until they’re nowhere near the route they’re supposed to protect.

This guide breaks down exactly why Anno 117 escort AI fails, and shows the methods that actually work: patrol fleets, blockades, safe-route redesign, harbor defenses, and other reliable ways to protect trade routes, stop pirate attacks, and keep your economy from collapsing.

Clear Answer: Why Your Trade Ships Keep Getting Attacked

Here’s the simple truth, dude: in Anno 117, putting a military ship on a trade route does NOT create a real convoy.

The game doesn’t force them to stay together. So what happens?

The escort is faster, so it sails ahead.
Pathfinding makes them drift onto slightly different routes.
If the escort spots an enemy, it breaks off and chases pirates, leaving your trader behind.
Over long distances, the two ships desync completely, and your trade ship ends up alone in pirate territory.

That’s why you keep getting the “Ship under attack” notification even though you think you assigned an escort.

So what actually works to protect trade routes in Anno 117?

Run patrol fleets and blockades instead of relying on 1-to-1 escorts.
Shorten and reroute dangerous trade lines so they avoid pirate hotspots.
Build harbor defenses and coastal towers along your main shipping lanes.
Set stances properly: traders on Evasive, warships on Aggressive.

This is the meta for stopping pirate attacks, keeping trade ships alive, and stabilizing your economy in Anno 117.

Why Escorts Don’t Stick to Traders

1. Speed and pathfinding issues

Here’s the big one: most warships in Anno 117 are simply faster than your trade ships. The game doesn’t force them to slow down or match pace, so the escort just cruises ahead like it’s in a race.

On top of that, pathfinding sometimes chooses slightly different routes for each ship, so over time they drift farther and farther apart. By the time pirates show up, your escort is halfway across the map.

2. Aggro and combat behavior

Escorts on Aggressive stance love to chase anything red on the minimap. The moment they spot a pirate, they peel off and sprint after it, completely forgetting your poor trader.

Once they’ve chased something off-screen, they almost never line back up with the original route. This is why your “convoy” keeps breaking the moment combat gets involved.

3. Route assignment ≠ escort logic

Adding a warship to a trade route doesn’t actually link it to the trader. It just puts that ship on the same delivery schedule.

Different loading times, different waiting times, and different ship speeds mean they almost never depart together. What you get is staggered movement, not a convoy.

Result:

Even if a military ship is technically “on the route,” your trade ships still spend most of the journey without real protection, which is why pirate attacks keep shredding routes and triggering constant “Ship under attack” warnings.

This is the core reason escorts fail in Anno 117 trade route defense, and why strategies like patrol fleets, blockades, and safe-route redesign are far more reliable.

Quick Tips: Fast, Actionable Advice

If you just want your Anno 117 trade routes to stop getting wrecked right now, here’s the couch-level breakdown:

1. Set stances correctly

Trade ships → Evasive (they try to run instead of fighting and dying)
Warships → Aggressive (they jump on anything that threatens the route)

2. Stop relying on 1-to-1 escorts

Escorts drift off anyway. Instead, park patrol fleets at key chokepoints so every trader passing through gets real protection.

3. Block pirate exits

Drop a few strong warships right outside pirate coves or along their usual sailing lines. If pirates die at the source, your routes stay safe.

4. Shorten dangerous routes

Break long supply lines into smaller segments with mid-point hubs. Less distance = fewer chances for pirates to catch traders alone.

5. Reroute around trouble spots

Don’t let trade ships sail right past pirate islands or hostile NPCs. Pull the route wide or hug your own coastline.

6. Strengthen harbors along major lanes

Build towers and coastal defenses near busy channels so your traders have safe zones to run through.

7. Adjust pirate pressure when the game allows

In custom games, set raiders to Passive or Dormant if you’d rather focus on city-building than constant pirate harassment.

These quick fixes stabilize routes fast and reduce the nonstop “Ship under attack” spam.

Strategy Comparison Table

Strategy	How It Works	Best For	Main Weaknesses
Direct Escorts	Military ship assigned to same route or following a trader	Short routes, early game, small empires	Desync over long distances; escorts chase enemies; traders still sail alone
Patrol Fleets	1–4 warships patrolling a fixed area (strait, intersection, near harbor)	Protecting multiple routes that cross the same region	Requires enough ships; does not cover remote parts of very long routes
Blockades	Warships parked near pirate coves or known spawn paths	Reducing overall pirate pressure on the entire map	Needs strong navy; ineffective against distant or scripted attacks
Route Redesign	Manually rerouting lines away from pirate and hostile zones	Long-term survival of critical trade chains	Slightly longer travel times; requires manual planning
Segmented Routes	Breaking one long route into multiple shorter links with hubs	Complex economies; late-game logistics	More routes to manage; requires clear hub planning
Harbor & Coastal Defenses	Towers and defenses placed along key shipping lanes	Areas close to core islands and main ports	Limited to coastlines; cannot protect far-off ocean segments
Pirate Settings / Diplomacy	Reducing raider activity via settings or diplomatic actions	Sandbox games or players focused on city-building	Limited or unavailable in some scenarios; less combat challenge

1. Patrol Fleets and Chokepoints

Concept:
Think of this like setting up guard posts instead of babysitting every single trade ship. Instead of trying to glue an escort to one trader, you build defended corridors that every route naturally passes through.

How to set it up:
Drop 1–4 warships on a tight patrol loop in spots where pirates love to strike, like:

Narrow straits where ships funnel through
Areas where several of your trade routes overlap
The approach leading into your main harbor

Put those warships on Aggressive stance so they instantly jump on anything red that enters the zone.

Then make sure your trade routes actually pass through these patrol areas. You’re basically creating safe “checkpoints” along the map.

Effect:
If a pirate wanders into one of these lanes, they run straight into a ready combat fleet instead of a lonely trader. It’s way more reliable than escorts and covers multiple trade ships at once.

2. Blockades Against Pirates

Concept:
This is the “cut the problem off at the source” strategy. Instead of chasing pirates all over the map, you park a heavier fleet right outside their front door and delete them the moment they try to leave.

How to do it:

Find the pirate coves or the routes pirates always seem to take when they spawn.
Drop a squad of your stronger warships—the tankier, the better—right outside those exits.
Keep them on Aggressive stance so they instantly attack anything that moves.
Give them hull and damage upgrades so they can brawl nonstop without sinking.

Effect:
Pirates get wiped out seconds after spawning, which means fewer raids everywhere. This takes a ton of pressure off your entire network and makes all your trade routes way safer without micromanaging escorts.

3. Route Redesign and Segmentation

Route redesign:
Sometimes the problem isn’t the escort—it’s the path your traders are taking. If you’re sending ships right past a pirate island or an angry NPC’s harbor, you’re basically giving them a free target.

So instead:

Pull your trade lines farther out into open water, away from danger.
Or slide the route along your own coastline, where your towers and defenses can back the trader up.
Even a small adjustment can turn a death run into a safe lane.

Segmentation:
If you’ve got one massive trade route like A → B → C → D, that’s asking for trouble. Long routes give more time for pirates to intercept and more chances for escorts to wander off.

Break it into clean chunks:

A ↔ B
B ↔ C
C ↔ D

Then assign the right ships to each segment—fast ones for high-risk stretches, cheaper ones for safe interior zones.

Effect:
Shorter routes mean less time in danger and far fewer opportunities for traders and escorts to drift apart. It instantly boosts survival rates across your entire trade network.

4. Harbor and Coastal Defenses

Key principles:
Think of your coastline as a built-in defense line. If you place your towers smartly, your trade ships basically get free, permanent escorts any time they sail past your shores.

Set it up like this:

Drop towers so their firing arcs cover harbor entrances and any stretch of water where multiple trade routes pass through.
Build layered defenses:
- Outer towers that guard the approach or channel
- Inner towers that protect the harbor core

This way, if pirates try to ambush your routes near your islands, they get shredded before they can even reach the trader.

Effect:
Any trade ship that hugs your defended coastline travels with the safety of static, always-ready firepower, turning dangerous sections of the route into guaranteed safe zones.

5. Ship Choice, Upgrades, and Stances

Ship choice:
If your escort is slower than your trader, it’s never catching up—ever. So use escorts that are as fast or faster than your trade ships. Save your heavy, tanky warships for blockades and patrol zones where they just sit and punch anything that enters.

Upgrades:
Give your escorts the good stuff:

Speed boosts so they can actually reach a fight in time
Hull and armor upgrades so they can tank pirate volleys without sinking

This turns them into reliable frontline ships instead of fragile tagalongs.

Stances:

Trade ships → Evasive (their job is to run, not fight)
Warships → Aggressive (their job is to delete threats immediately)

Effect:
Your traders focus on survival and staying alive, while your escorts handle damage and threat removal. Together, it massively boosts how well your network survives pirate pressure.

6. Reducing Pirate Pressure

Game settings:
If you’re playing a custom or sandbox run and you’re tired of pirates wrecking your entire trade network, you can simply turn the heat down.

Set raiders to Passive for light, occasional harassment.
Set them to Dormant if you basically want pirates out of the picture altogether.

This is perfect if you want to focus on building your empire without constant naval chaos.

Diplomacy:
In scenarios where diplomacy matters, you can buy yourself some peace.

Pay for ceasefires,
Complete quests,
And trade regularly to keep relations stable.

It doesn’t always remove pirates completely, but it cuts down the pressure a lot.

Effect:
With fewer pirate fleets spawning, your trade routes take way fewer hits—and you don’t have to micromanage escorts or patrols nearly as often. It’s a big quality-of-life boost for your entire Anno 117 economy.

Summary

Here’s the bottom line, man: in Anno 117, the escort system just isn’t built to keep warships glued to your trade ships over long distances. Speed differences, weird pathfinding, and aggressive combat behavior all guarantee that escorts drift off and leave traders exposed.

So instead of relying on individual escorts, the real way to keep your trade routes alive is to control the region, not the ship:

Lock down dangerous spots with patrol fleets and blockades.
Reroute trade lines away from trouble and break long routes into shorter, safer segments.
Build strong harbor and coastal defenses where your routes pass near your islands.
Use the right stances and ship upgrades so your navy reacts properly when danger hits.
And if the game mode allows it, lower pirate pressure through settings or diplomacy.

Put all of this together, and suddenly your traders stop exploding every five minutes—you get stable routes, fewer interruptions, and way less micromanagement across your whole Anno 117 economy.