Underwater TNT

This page describes an education-related feature.

This feature is available only in Minecraft Education or when enabling the "Education" option in Bedrock Edition.

This feature is exclusive to Bedrock Edition and Minecraft Education.

Underwater TNT is a block that can be used by the player to initiate a controlled explosion underwater.

Obtaining

Breaking

Underwater TNT can be broken instantly using any tool, or without a tool. However, primed underwater TNT cannot be broken, as it is an entity.

Crafting

Ingredients	Crafting recipe
Sodium + TNT

Usage

Underwater TNT blocks can be activated the same way as a normal TNT block.

Behavior

Once activated, it explodes like a normal TNT block. However, unlike the TNT block, it can destroy blocks underwater. It can still explode in the air, although it does not work in lava. Underwater TNT has the same delayed detonation rate as normal TNT.

Sounds

Generic

Source	Description	Resource location	Volume	Pitch
Blocks	Once the block has broken	`dig.grass`	0.7	0.8-1.0
Blocks	When the block is placed	`dig.grass`	0.8	0.8-1.0
Blocks	While the block is in the process of being broken	`hit.grass`	0.3	0.5
Players	Falling on the block with fall damage	`fall.grass`	0.4	1.0
Players	Walking on the block	`step.grass`	0.3	1.0
Players	Jumping from the block	`jump.grass`	0.11	1.0
Players	Falling on the block without fall damage	`land.grass`	0.21	1.0

Unique

Sound	Source	Description	Resource location	Volume	Pitch
	Blocks	When an underwater TNT block is lit	`random.fuse`	1.0	1.0
	Blocks	When an underwater TNT block explodes	`random.explode`	4.0	1.0

Data values

ID

Name	Identifier	Numeric ID	Form	Item ID^{[i 1]}	Translation key
Underwater TNT	`tnt`	`46`	Block & Giveable Item^{[i 2]}	Identical^{[i 3]}	`tile.underwater_tnt.name`

↑ ID of block's direct item form, which is used in savegame files and addons.
↑ Available with /give command.
↑ The block's direct item form has the same id as the block.

Name	Identifier	Numeric ID	Translation key
Primed Underwater TNT	`tnt`	`65`	`entity.tnt.name`

Block state

Name	Metadata Bits	Default value	Allowed values	Values for Metadata Bits	Description
allow_underwater_bit	`0x2`	`false`	`false`	`0`	This is normal TNT.
allow_underwater_bit	`0x2`	`false`	`true`	`1`	This is Underwater TNT.
explode_bit	`0x1`	`false`	`false`	`0`	Hitting the TNT block breaks it, dropping it as an item that can be picked up.
explode_bit	`0x1`	`false`	`true`	`1`	Hitting the TNT block causes it to ignite and then explode.

Trivia

The inclusion of sodium is a reference to elemental sodium's explosive reaction with water. All alkaline metals react with water violently to form hydrogen gas and a hydroxide. The heat generated often ignites the gas.

History

Bedrock Edition
1.4.0	beta 1.2.20.1	Added underwater TNT.
Education Edition
1.0.27		Added underwater TNT.

Issues

Issues relating to "Underwater TNT" are maintained on the bug tracker. Report issues there.

Redstone

Entities

[bedrock-item-id-1] ID of block's direct item form, which is used in savegame files and addons.

[bedrock-give-available-2] Available with /give command.

[bedrock-item-form-3] The block's direct item form has the same id as the block.

[i 1]

[i 2]

[i 3]