Can't believe no one came up with this before, but here it is a playable Blue Whale for Cold Waters! Based on the Narwhal, it shoots, it scoots(slowly), and poops noisemakers! Currently for single missions only and campaigns that have the Narwhal by default as it's a Narwhal replacement.
Notes: Don't go slower than 4kts, doing so will result in a soft crash.
https://www.subsim.com/radioroom/dow...o=file&id=5616