In this seed you will spawn in the dark, right under the mansion. If you get out of this place, you can go to the nearby village with ravine, at 148 ~ 196. Not far from the settlement, at coordinates 200 ~ 56, you will find shipwreck.
How to use Spawn Under the Mansion seed
Start the Singleplayer mode
Select ‘Create New World’
Then click on ‘More World Options…’
In the ‘Seed for the World generation’ field, enter 10931311583393626