# Subnautica Silent Running Update

- Product: Subnautica (https://whatsnew.fyi/product/subnautica)
- Vendor: Unknown Worlds Entertainment
- Date: 2017-04-28
- Original notes: https://store.steampowered.com/news/app/264710/view/2872689832680230458
- Permalink: https://whatsnew.fyi/product/subnautica/releases/2017-04-28-silent-running-update

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- **changed** — Cyclops Submarine can now be damaged by aggressive creatures, which tear holes in the hull and cause fires to start
- **added** — Cyclops now has multiple operating modes: Ahead Slow, Ahead Standard, Ahead Flank, and Silent Running, each with different tradeoffs between speed and light and noise output
- **added** — Terrain Scanning active sonar module for Cyclops that reveals the contours of the sea-bed ahead
- **added** — Threat detecting passive sonar module for Cyclops that displays the location of hostile creatures around the submarine
- **added** — Shield system for Cyclops to temporarily deflect incoming attacks
- **added** — Decoy deployment system for Cyclops to distract aggressive creatures
- **added** — Fire Suppression System for Cyclops to extinguish fires
- **changed** — Fatally damaged Cyclops now experiences hull failure that kills anyone inside, and the wreck can be salvaged for upgrade modules and equipment

A huge Cyclops Submarine overhaul has arrived: The Silent Running Update. Visit the dedicated [Update Site](https://unknownworlds.com/subnautica/silent-running) to see it in action.

https://www.youtube.com/watch?v=JuFoil12HzI

##### Red Alert: Fire detected!

Look out: Aggressive creatures can now damage the Cyclops. They will tear holes in the hull, and if enough damage accumulates, fires will start. Extinguish the fires quickly, or risk losing the boat!

##### Rig for Silent Running

The Cyclops now has multiple operating modes: Ahead Slow, Ahead Standard, Ahead Flank, and Silent Running. Each represents a different tradeoff between speed travelled and output of light and noise. The noisier and brighter your Cyclops runs, the more likely it is to be attacked by aggressive creatures.

##### Sonar Contact

Two new sonar modules are available for the Cyclops. First: A Terrain Scanning active sonar that reveals the contours of the sea-bed ahead. Second: A Threat detecting passive sonar that displays the location of hostile creatures around the submarine.

##### Raise Shields

You are not helpless in the face of creature aggression. Raise shields to temporarily deflect incoming attacks. Deploy decoys to distract aggressive creatures while you pass. And activate the Fire Suppression System to extinguish fires that burn beyond control.

##### Abandon Ship

A fatally damaged Cyclops will experience hull failure - Killing anyone caught inside. Get off the boat while you still can! Once the wreck settles on the ocean floor, you can swim inside to salvage upgrade modules and equipment.

There's lots more to the Silent Running update. Check out the [Silent Running update website](https://unknownworlds.com/subnautica/silent-running) to see more!

http://store.steampowered.com/app/264710/Subnautica/