How To Ride The Reservoir Boat In Blue Prince

Are you planning to sail on the Reservoir boat in Blue Prince? While you might think that this is a quaint activity that leads to a bit of sightseeing, it's actually a fairly convoluted task that requires visiting multiple locations. Don't worry, since we've got you covered with all the details. Just watch out because this article contains a few spoilers.How to sail on the Reservoir boat in Blue PrinceYou can sail on the Reservoir boat by altering the water levels via the Pump Room. This is easier said than done because (a) you don't know what those water levels are, and (b) you still need to make changes in the Pump Room itself.In any case, we've outlined our guide to mention the clues first, just in case you want to solve things on your own. After this section, we then talk about how to complete the objective.Note: This whole process requires the use of the Pump Room. Don't worry even if you don't have enough steps to make it back to the Reservoir from the Pump Room. The configuration that you set it to will be retained across multiple days/runs until you make changes. Reservoir water levels clueIf you want to ride the Reservoir boat in Blue Prince, then you might be interested in the clue that informs you about the water levels. This is found in the Underground just past the Red Door. Rotate the giant gear so you can reach the other side of the area. There, look at the window pane to see the water levels. The most important ones are:Dock level: 13Entry level: 6Fully drain: 0Note: Think of the Reservoir's water levels as akin to a math problem. If full, the Reservoir has 14 pips/levels (+14). We have to bring it down to 13 first (dock level), and then 6 (entry level). Dock level: How to move the Reservoir boat to the other sideThis is a fairly simple task, but you do need to have access to the Pump Room for this one. It's similar to what you did when you drained the Fountain, except you only need to drain one water level from the Reservoir (assuming it's full)--i.e. from +14, we need to bring it down to +13.Aside from this, you must also have access to the Underground's western half, which is where the boat is initially docked. There are entry paths from the Fountain, Tomb, and Blue Flames Elevator.If you did it right, you should be able to interact with the boat in the Reservoir. This leads to a cutscene where Simon sails across, bringing the boat over to the Foundation side of the cavern. Entry level: Pump Room configuration to partially drain the ReservoirThe next step if you want to sail on the Reservoir boat in Blue Prince requires us to return to the Pump Room once more. This time, though, we need to set the Reservoir's water level to +6 (entry level).First, let's assume that it's at +13 (dock level). We then need to "do the math" to bring it down to +6 (entry level):Drain the Reservoir using Tank 1 (-4).The Reservoir should now be at +9.With the Reservoir at +9:Fill up the Fountain using both Tank 1 and Tank 2.These main tanks must be fully drained, and the reserve tank should be at two levels.Fully drain the Kitchen using Tank 2.Switch the Reservoir to Tank 2 and drain one water level (-1).The Reservoir should now be at +8:Use the reserve tank to fill up Tank 1 by two levels.Drain the Reservoir using Tank 1 (-2). What's beyond the Reservoir?With the above configuration, you should be able to sail on the Reservoir boat in Blue Prince. Make your way back to the cavern in the Underground via the Foundation or Basement. Then, head down the wooden steps and interact with the boat.We don't want to spoil what happens next, but here's the gist:Take screenshots of every note, document, and map that you see in this area. These give you hints related to other puzzles and mysteries in the game.Don't forget to pick up the Sanctum Key that's on the crate.Last but not least, this isn't the only Sanctum Key that you can find deep below the manor. There's also another one that can be yours if you fully drain the water.A surreal adventure filled with wonders and mysteries await you in Blue Prince. If ever you feel stuck or lost at any point in time in your playthrough, don't forget to check our Blue Prince guides hub.

Apr 11, 2025 - 18:24
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How To Ride The Reservoir Boat In Blue Prince


Are you planning to sail on the Reservoir boat in Blue Prince? While you might think that this is a quaint activity that leads to a bit of sightseeing, it's actually a fairly convoluted task that requires visiting multiple locations. Don't worry, since we've got you covered with all the details. Just watch out because this article contains a few spoilers.

How to sail on the Reservoir boat in Blue Prince

You can sail on the Reservoir boat by altering the water levels via the Pump Room. This is easier said than done because (a) you don't know what those water levels are, and (b) you still need to make changes in the Pump Room itself.

In any case, we've outlined our guide to mention the clues first, just in case you want to solve things on your own. After this section, we then talk about how to complete the objective.

Note: This whole process requires the use of the Pump Room. Don't worry even if you don't have enough steps to make it back to the Reservoir from the Pump Room. The configuration that you set it to will be retained across multiple days/runs until you make changes.

Reservoir water levels clue


If you want to ride the Reservoir boat in Blue Prince, then you might be interested in the clue that informs you about the water levels. This is found in the Underground just past the Red Door. Rotate the giant gear so you can reach the other side of the area. There, look at the window pane to see the water levels. The most important ones are:

  • Dock level: 13
  • Entry level: 6
  • Fully drain: 0

Note: Think of the Reservoir's water levels as akin to a math problem. If full, the Reservoir has 14 pips/levels (+14). We have to bring it down to 13 first (dock level), and then 6 (entry level).

Dock level: How to move the Reservoir boat to the other side


This is a fairly simple task, but you do need to have access to the Pump Room for this one. It's similar to what you did when you drained the Fountain, except you only need to drain one water level from the Reservoir (assuming it's full)--i.e. from +14, we need to bring it down to +13.

Aside from this, you must also have access to the Underground's western half, which is where the boat is initially docked. There are entry paths from the Fountain, Tomb, and Blue Flames Elevator.

If you did it right, you should be able to interact with the boat in the Reservoir. This leads to a cutscene where Simon sails across, bringing the boat over to the Foundation side of the cavern.

Entry level: Pump Room configuration to partially drain the Reservoir


The next step if you want to sail on the Reservoir boat in Blue Prince requires us to return to the Pump Room once more. This time, though, we need to set the Reservoir's water level to +6 (entry level).

First, let's assume that it's at +13 (dock level). We then need to "do the math" to bring it down to +6 (entry level):

  • Drain the Reservoir using Tank 1 (-4).
  • The Reservoir should now be at +9.

With the Reservoir at +9:

  • Fill up the Fountain using both Tank 1 and Tank 2.
  • These main tanks must be fully drained, and the reserve tank should be at two levels.
  • Fully drain the Kitchen using Tank 2.
  • Switch the Reservoir to Tank 2 and drain one water level (-1).

The Reservoir should now be at +8:

  • Use the reserve tank to fill up Tank 1 by two levels.
  • Drain the Reservoir using Tank 1 (-2).

What's beyond the Reservoir?


With the above configuration, you should be able to sail on the Reservoir boat in Blue Prince. Make your way back to the cavern in the Underground via the Foundation or Basement. Then, head down the wooden steps and interact with the boat.

We don't want to spoil what happens next, but here's the gist:

  • Take screenshots of every note, document, and map that you see in this area. These give you hints related to other puzzles and mysteries in the game.
  • Don't forget to pick up the Sanctum Key that's on the crate.

Last but not least, this isn't the only Sanctum Key that you can find deep below the manor. There's also another one that can be yours if you fully drain the water.

A surreal adventure filled with wonders and mysteries await you in Blue Prince. If ever you feel stuck or lost at any point in time in your playthrough, don't forget to check our Blue Prince guides hub.