100 Days at Sea Cargo Ship Walkthrough: How to Enter, Open Doors, Find Batteries, and Unlock the Corruption Portal

The 100 Days at Sea cargo ship walkthrough covers everything you need to know about exploring the Cargo Ship, defeating its enemies, solving the battery puzzle, collecting valuable loot, and accessing the mysterious Corruption Portal.

In 100 Days at Sea, a Roblox ocean survival adventure developed by Stranded Devs, players must survive 100 days in the Bermuda Triangle. Along the way, they gather resources with a harpoon, expand their rafts, explore dangerous locations, and fight hostile enemies.

The Cargo Ship is an important exploration destination associated with the game's corruption-related content. However, entering it unprepared can waste resources and put your survival progress at risk.

This guide explains the recommended preparation, Cargo Ship progression steps, hidden rewards, and common mistakes. Some mechanics have changed between updates, so exact requirements should always be confirmed in the current game version.

1. How to Find the Cargo Ship in 100 Days at Sea

Before attempting the Cargo Ship, you need to locate it and prepare your equipment.

When Does the Cargo Ship Appear?

Community guides describe the Cargo Ship as an encounter that becomes available during survival progression. Some reports mention an appearance notification involving a storm, but the exact arrival day varies between sources.

Rather than relying on an unverified spawn schedule, watch for new event notifications and check the surrounding ocean while exploring.

When searching for the ship:

1. Establish a stable raft with sufficient supplies.
2. Collect resources using your harpoon.
3. Prepare weapons and healing items.
4. Watch for Cargo Ship event notifications.
5. Approach the vessel carefully when it becomes accessible.
6. Identify a safe boarding point before leaving your raft.

Important: The Cargo Ship is an exploration location, not a controllable ship that players can use as a replacement for their raft.

Recommended Equipment

Do not begin the encounter with critically low health or insufficient ammunition.

For multiplayer groups, assign one player to handle ranged enemies while another manages close-range threats.

2. How to Enter the Cargo Ship and Open the Doors

The central challenge of the 100 Days at Sea cargo ship walkthrough is progressing through the ship's blocked sections.

Community walkthroughs of the corruption-related version describe a sequence involving explosives, enemy encounters, batteries, and locked doors.

Step 1: Board the Cargo Ship

Approach the Cargo Ship and look for an accessible deck or boarding area.

Once aboard, examine the environment before rushing toward containers or interior rooms.

Hostile enemies may patrol the ship, so clear immediate threats before investigating any puzzle objects.

Step 2: Defeat the Corrupted Crew

Some documented versions of the encounter feature corrupted crewmates and officers.

These enemies may use different attack styles, making positioning especially important.

Recommended combat tactics include:

• Keep moving to avoid becoming surrounded.
• Prioritize enemies attacking from a distance.
• Use ranged weapons when approaching dangerous groups.
• Retreat toward open deck areas when necessary.
• Preserve healing supplies for emergencies.

In multiplayer, avoid separating too far from your teammates.

Step 3: Open the Blocked Entrance

Corruption-update walkthroughs describe an explosive entrance puzzle.

The reported procedure is:

1. Locate fuel barrels or other usable fuel objects.
2. Identify the designated blocked section of the ship.
3. Place the required fuel object near the marked area.
4. Move away from the explosion.
5. Shoot the fuel object using a ranged weapon.
6. Enter the newly accessible section.

Tip: Do not waste ammunition shooting random containers. Look for an obvious interaction point or marked obstruction.

This explosive-entry mechanic is based on community documentation and may differ after updates.

Step 4: Clear the Interior Enemies

After entering, prepare for additional hostile encounters.

The interior may contain several waves of corrupted enemies. Fight cautiously rather than trying to complete the entire section in one uninterrupted rush.

Maintain distance when possible, watch for enemies approaching from multiple directions, and regroup before advancing.

Step 5: Find and Install Batteries

The Cargo Ship's battery puzzle is one of its most frequently discussed mechanics.

According to several community walkthroughs, batteries can be obtained from containers or chests inside the ship.

To solve the puzzle:

1. Search accessible rooms for loot containers.
2. Open chests and examine available rewards.
3. Collect any batteries you discover.
4. Locate the battery sockets near the locked door.
5. Install batteries into the available sockets.
6. Check whether the door becomes accessible.

Some guides describe a requirement of four batteries, although this number should be verified in the current version.

If the door remains locked, search previously accessible areas for overlooked containers or incomplete objectives.

3. Cargo Ship Loot, Secret Area, and Corruption Portal

After clearing the main sections, your next objective is collecting rewards and investigating the portal area.

Where to Find Cargo Ship Loot

Possible rewards mentioned in community guides include equipment, ammunition-related supplies, healing items, and corruption-related materials.

Prioritize loot according to your current survival needs.

Exact chest contents and drop quantities may change between game versions.

How to Reach the Secret Area

Several Cargo Ship guides describe a raised platform above the portal room.

Players reportedly use the harpoon to access this elevated section.

Try the following approach:

1. Finish the main interior encounter.
2. Locate the Corruption Portal area.
3. Look above the portal for accessible ledges.
4. Use the harpoon to reach the elevated platform.
5. Inspect the area for additional treasure chests.

Community reports describe purple chests containing a Revolver and a Corrupt Shard.

However, treat these rewards as version-dependent rather than guaranteed drops.

How to Unlock the Corruption Portal

The Cargo Ship is also associated with access to the Corruption Dungeon.

Community guides indicate that players must gather Corrupt Shards before activating the portal.

Reported shard sources include certain bosses, special encounters, merchants, and Cargo Ship rewards.

The exact shard requirement is disputed: some guides report five, while others report six.

Use the current in-game portal interface to determine whether you have collected enough.

Before entering the portal, replenish ammunition, restore health, and prepare for more difficult combat.

Survival tip: Completing Cargo Ship objectives is not the same as completing the Corruption Dungeon. Treat the portal as the beginning of another challenge.

4. Best Cargo Ship Strategies and FAQ

Recommended Strategy for Solo Players

Solo players should prioritize preparation over speed.

Build a reliable raft, gather equipment, and maintain a reserve of healing supplies before exploring the ship.

Inside the Cargo Ship, clear each accessible area before progressing to the next objective.

Avoid fighting several enemies simultaneously if retreating can create a safer engagement.

Recommended Strategy for Multiplayer Teams

Multiplayer groups can divide responsibilities:

• Combat player: Focuses on dangerous enemies.
• Support player: Carries supplies and assists teammates.
• Explorer: Searches rooms for batteries and objectives.
• Loot collector: Tracks discovered equipment and resources.

Smaller groups can combine these responsibilities.

Communication is particularly useful when searching for battery sockets or coordinating attacks against interior enemies.

Common Mistakes to Avoid

The most common problem is attempting the Cargo Ship before gathering adequate equipment.

Other mistakes include overlooking battery containers, wasting ammunition, ignoring elevated platforms, and entering the corruption-related content without sufficient supplies.

Always prioritize survival over optional loot.

Frequently Asked Questions

How do you open the Cargo Ship doors in 100 Days at Sea?

Community guides describe using a fuel explosion to access the interior, defeating corrupted enemies, and installing batteries near locked doors. Check the current game's interaction prompts because puzzle requirements may change.

Where is the secret chest on the Cargo Ship?

Community walkthroughs describe an elevated ledge above the Corruption Portal. Players reportedly reach it using the harpoon and can discover purple treasure chests containing special rewards.

Can you drive the Cargo Ship in 100 Days at Sea?

No. The Cargo Ship is described as an exploration location rather than a player-controlled vessel. Its main purpose is to provide combat, loot, puzzle objectives, and access to corruption-related content.

The best approach to the 100 Days at Sea Cargo Ship is to prepare thoroughly, clear enemies methodically, solve the battery puzzle, inspect elevated loot areas, and approach the Corruption Portal only when properly equipped. With careful exploration and effective resource management, the Cargo Ship can become a valuable part of your journey toward surviving all 100 days.