The Welsh Triangle was an artificial isle triangle, and Sir Raleigh's main base of operations. The once peaceful coast of the Isle O' Wrath was now a resting place for hundreds of ships that fell victim of Raleigh's storm machine, which caused bad weather, and thus, made thousands of ships crash against the rocks and sink, allowing Raleigh to loot them for treasure. It was a heavily guarded fortress, the most secure location being Raleigh's storm machine, where the former resided.
The environment at the Welsh Triangle is somewhat lush. Trees and thorns make up most of the area. Other environments here include steep cliffs; some even have waterfalls which flow very far down into the sea. Out at sea, Sly can see lots of ship wrecks and other smaller islands that are inaccessible. In the center of the Welsh Triangle lies Raleigh's humongous ship, which includes more trees, thorns and plants.
Sir Raleigh's BoatSir Raleigh's boat was a massive boat, and the central piece of the Welsh Triangle and it also served as Raleigh's primary base of operations. Raleigh used this boat to power his storm machine. The boat had an engine room, a power source room, a wrecked ship collection room, and even its own submarine. Raleigh's boat also contained Raleigh's library and Raleigh's personal quarters. The boat was guarded by both Walrus Guards and Squid Guards. After Raleigh was defeated, and his operation was shut down, the boat was most likely removed from the coast of the Isle O'Wrath.
Raleigh's Personal Quarters
Raleigh's personal quarters was an area of the ship of where the wicked frog kept the treasures and jewelry he stole from the ships his storm machine wrecked. It contained some of the best security systems in the whole ship.
The engine room was one of the main areas of Raleigh's boat powering his storm machine. It was filled with machines that Sly had to sabotage in order to spoil Raleigh's plans. The room was guarded by several walrus guards.
The power room was the hottest place within Raleigh's boat. It provided most of the power needed for the storm machine to create its water hurricane. It was a room filled with furnaces and what seemed to be the main furnace of the ship.
This room was filled with all of Raleigh's books. It was a place of knowledge within Raleigh's boat. However, this room was incredibly dangerous because it was protected by dart weapons disguised as globes, which would execute possible intruders.
In this room, Raleigh kept some of the ships his storm machine sank. The room also contained several wrecked airplanes. The room as guarded by several walrus guards.
Crab Gang Room
The crab gang room was an underwater room were Raleigh's gang of crabs stashed his sunken treasure. The room also contained the last of Raleigh's Treasure Keys.
The Storm Machine
The storm machine was the most secured location within Raleigh's ship and the headquarters of Raleigh's boat. It was a massive blimp that creates hurricanes that caused unwary ships to crash, allowing Raleigh and his crew to plunder the debris. It was also here that Raleigh kept his part of the Thievius Raccoonus. It required huge amounts of power to create the water hurricane that was used to sink ships. It also required frequent maintenance.
- "A Stealthy Approach"
- "Into the Machine"
- "High Class Heist"
- "The Fire Down Below"
- "A Cunning Disguise"
- "The Gunboat Graveyard"
- "Treasure in the Depths"
- "The Eye of the Storm"
- The Welsh Triangle bears a striking resemblance to the famous Bermuda Triangle; located off the coast of Miami, Florida in the United States.
- This is the very first rainy level in the series.