From Beneath the Waves

The colonizers on … regularly explore the planet in hopes of finding more resources to help with day-to-day life. A recent expedition to the north pole has now unveiled a large object on the bottom of the ocean: An alien battle cruiser. The pressure of the deep will prove a challenge, but it is possible to get to the ship.

The command below will trigger the "From Beneath the Waves" event in Stellaris:

When this event fires, you can choose between these 6 options:

• Try and salvage it.
  • Start special project: Submerged Cruiser
• Scrap it to learn its secrets.
• Scrap it to learn its secrets.
  Available only if Requires technology: Destroyers.
• Try and salvage it.
  Available only if Must not have technology: Destroyers.
  • Start special project: Submerged Cruiser
• Try and salvage it.
  Available only if Requires technology: Destroyers; Must not have technology: Cruisers.
  • Start special project: Submerged Cruiser
• Try and salvage it.
  Available only if Requires technology: Cruisers.
  • Start special project: Submerged Cruiser
  • Engineering: +None to None

Conditions the game checks before this event can fire:

• Requires technology: Destroyers

owner = {
  has_technology = tech_destroyers
  NOR = {
    has_country_flag = colony_submerged_cruiser
    is_wilderness_empire = yes
  }
}
pop_amount > 0
NOR = {
  has_planet_flag = colony_event
  is_planet_class = pc_volcanic
}
OR = {
  is_planet_class = pc_continental
  is_planet_class = pc_tropical
  is_planet_class = pc_gaia
  is_planet_class = pc_ocean
}