Surviving 100 days at sea in Roblox is a true test of grit. Your simple wooden raft quickly becomes overcrowded with crafting benches, storage chests, and drying racks. To truly thrive, you need a proper 100 days at sea makeshift building to house your operations. This guide breaks down exactly how to get the coveted Makeshift Building blueprint, how to organize your workshops, and how to design a base that can withstand the Kraken and the elements. Whether you are a solo player or running a crew, securing the 100 days at sea makeshift building is a massive turning point that separates a struggling survivor from an ocean conqueror.
What is the Makeshift Building in 100 Days at Sea?
In the context of the Roblox survival experience, the Makeshift Building (often referred to as the Container Shelter by the community) is a high-tier blueprint that provides a fully enclosed, multi-story structure for your raft. Unlike basic walls and roofs made of wood, this building offers a concrete or metal shell that is highly resistant to damage.
According to extensive player reports, placing this shell immediately solves two major late-game problems: space efficiency and defensive integrity. Without it, players often struggle to keep their crafting stations organized and protected from ghost pirate raids or Kraken tentacles. The Makeshift Building serves as a permanent foundation for your base, allowing you to stack floors and dedicate entire levels to specific tasks.
Base Tier Progression
| Tier | Base Type | Key Features | Crafting Stage |
|---|---|---|---|
| 1 | Floating Platform | Single layer, exposed storage, weak | Early Game (Days 1-15) |
| 2 | Wooden Shack | Basic walls, roof, drying racks | Mid Game (Days 15-30) |
| 3 | Makeshift Building | Multi-floor shell, concrete walls, high durability | Mid-Late Game (Days 40+) |
| 4 | Fortress Network | Defensive turrets, multiple buildings, full automation | End Game (Days 70+) |
How to Get the Makeshift Building Blueprint
The primary method for unlocking the Makeshift Building is by raiding the Offshore Oil Rig. This process requires significant preparation but yields the best blueprints in the game. Community guides on TikTok and YouTube agree on a consistent 5-step procedure.
Step 1: Equip a Radar You cannot find the necessary islands without a radar installed on your raft. Build it as soon as you have basic electronic components. The radar will reveal three specific grid locations on your map.
Step 2: Activate the Transponders Travel to each of the three marked islands. On each island, there is a hidden transponder device. Activate all three. This creates a global signal that reveals the Oil Rig’s location.
Step 3: Locate the Rig Once the transponders are active, a permanent red marker will appear on your map. This marks the Oil Rig. Head directly towards it, but be prepared—the enemies here are far tougher than standard island NPCs.
Step 4: Clear the Rig The rig is swarming with ghost pirates and hostile survivors. Player experiences highly recommend bringing a team for this section. Use ranged weapons to pick off guards from a distance and save your medical supplies for the indoor fights. A machete or tier-2 sword is essential for close-quarters combat.
Step 5: Loot the Purple Chest At the top of the rig structure, you will find a glowing Purple Chest. This is the jackpot. Looting it will grant you the 100 days at sea makeshift building blueprint, along with other critical items.
Oil Rig Rewards Table
| Blueprint | Category | Rarity | Usage |
|---|---|---|---|
| Makeshift Building | Base Structure | Legendary | Core housing for workshops |
| Container Shelter | Base Structure | Epic | Secure storage room |
| Auto Turret | Defense | Legendary | Automated base defense |
| Advanced Engine | Mobility | Epic | Faster raft travel |
Core Workshops: Operating the Engine of Your Raft
Once you have placed your makeshift building, the real crafting begins. The key to surviving 100 days is organizing your production lines so you can multitask efficiently.
In a popular community playthrough, the "Wanderer's Best House" build utilized the ground floor entirely for heavy machinery. You should aim to do the same. Below are the essential workshops you need to prioritize.
The Ground Floor Assembly:
- Iron Workshop: Smelt scrap metal into ingots. Iron is the backbone of advanced crafting and structural reinforcements.
- Wood Workshop: Process raw logs into planks. You will burn through wood faster than any other resource.
- Gas Workshop: Refine crude oil into boat fuel. Your raft will be useless if you run out of gas mid-ocean.
- Bomb Workshop: Create explosives for Kraken hunting and mass resource gathering on islands.
- Oil Workshop: Produce lubricants and high-grade fuel components for your engine.
- Defensive Tentacles: Place these at the entrances of your base to passively kill enemies trying to board.
Workshop Material Requirements
| Workshop Station | Primary Resource | Secondary Resource | Output |
|---|---|---|---|
| Iron Workshop | Scrap Metal | Coal | Iron Ingots |
| Gas Workshop | Crude Oil | Empty Bottles | Boat Fuel |
| Bomb Workshop | Gunpowder | Iron Sheets | Explosive Charges |
| Wood Workshop | Logs | Nails | Planks / Walls |
Pro Tip: In the early days of your run, stockpile Crude Oil aggressively. Many players report the Gas Workshop being their biggest bottleneck, which severely reduces their ability to explore for better blueprints.
Designing Your Perfect Ocean Base Layout
A cluttered raft invites disaster. Organization is not just about aesthetics; it directly impacts your survival efficiency. Using the 100 days at sea makeshift building allows you to implement a strict vertical layout.
Based on successful builds seen in YouTube showcases and community base tours, here is the optimal floor-by-floor plan.
- First Floor (The Ranch & Ammo Farm): Dedicate this floor to your animals. In the game, taming and breeding animals (like Pumbas) provides a passive source of food and materials. This floor should also host your Ammo Factory so your AI companions never run out of bullets during raids.
- Rooftop (The Resort): Do not neglect your morale. The rooftop is your lookout tower and your safe zone. Players have turned this into a relaxing resort vibe with furniture, campfires, and storage. It offers a clear view of incoming threats like the Kraken.
Recommended Base Layout Strategy
| Floor | Primary Function | Key Installations | Defenses |
|---|---|---|---|
| Ground | Production | Iron, Wood, Gas, Bomb, Oil Workshops | Tentacles, Turrets |
| First | Life Support & Ammo | Animal Pens, Ammo Factory, Food Prep | Parapet Walls |
| Roof | Scouting & Logistics | Lookout Post, Furniture, Distress Signals | Torches, Fences |
Surviving 100 Days: Gameplay Timeline
Dropping the blueprint is only half the battle. You need to survive long enough to gather the resources to build it. The early game is all about survival, the mid-game is about raiding, and the late game is about stability.
Key Milestones for a Successful Run:
- Days 1-15: Build a stable food supply. Fishing is reliable, but Pumba hunting is faster. Expand the raft foundations to accommodate future buildings.
- Days 15-40: Equip your radar and locate the three islands. Craft a machete and a ranged weapon. Rescue the Fisherman and Lucy to get better support and gear.
- Days 40-60: This is your "Go Time." Clear the Oil Rig. Loot the makeshift building and install it immediately.
- Days 60-100: Focus on fortress upgrades. Kill the Kraken multiple times for experience and loot. Turn the rooftop into a resort. Stockpile resources for an indefinite survival.
Warning: The Kraken becomes more aggressive the longer you survive. Ensure your base is structurally sound. One clean hit from a tentacle can destroy exposed foundations.
Frequently Asked Questions
How do I unlock the 100 days at sea makeshift building blueprint? You must equip a radar, find three specific islands, activate their hidden transponders, raid the revealed oil rig, and open the purple chest at the top. This process is dangerous but guarantees the makeshift building blueprint.
Can I build a viable base without the Makeshift Building? Yes, you can survive using a wooden raft and walls. However, the 100 days at sea makeshift building provides a massive advantage by giving you a pre-built, damage-resistant shell. It saves hundreds of planks and nails compared to building an equally large structure from scratch.
What is the best first floor to build inside my new base? Start with the Iron Workshop and Wood Workshop on the ground floor. Processing materials is the core loop of the game. With these two running, you can quickly build the Gas and Bomb workshops on the same floor.
Is it better to play solo or with a team to get this blueprint? Community reports strongly suggest that raiding the Oil Rig solo is very difficult due to the density of enemies. Teaming up with at least one other player is highly recommended for clearing the rig and looting the chest safely.