diff --git a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_full_back_damaged.mts b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_full_back_damaged.mts
index 12f3c9b13..a65312000 100644
Binary files a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_full_back_damaged.mts and b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_full_back_damaged.mts differ
diff --git a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_full_damaged.mts b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_full_damaged.mts
index 5c8a3e105..53f70f7a9 100644
Binary files a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_full_damaged.mts and b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_full_damaged.mts differ
diff --git a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_full_normal.mts b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_full_normal.mts
index 3d997c83b..66f8af7cd 100644
Binary files a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_full_normal.mts and b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_full_normal.mts differ
diff --git a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_half_back.mts b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_half_back.mts
index f58376f30..8c5d43cbf 100644
Binary files a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_half_back.mts and b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_half_back.mts differ
diff --git a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_half_front.mts b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_half_front.mts
index 41efb386b..d029c033a 100644
Binary files a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_half_front.mts and b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_shipwreck_half_front.mts differ
diff --git a/mods/MAPGEN/mcl_structures/shipwrecks.lua b/mods/MAPGEN/mcl_structures/shipwrecks.lua
index 8506c509b..c7eb279d9 100644
--- a/mods/MAPGEN/mcl_structures/shipwrecks.lua
+++ b/mods/MAPGEN/mcl_structures/shipwrecks.lua
@@ -71,13 +71,13 @@ vl_structures.register_structure("shipwreck",{
 	place_on = {"group:sand","mcl_core:gravel"},
 	spawn_by = {"group:water"},
 	num_spawn_by = 4,
-	chunk_probability = 10, -- todo: 15?
+	chunk_probability = 15,
 	biomes = ocean_biomes,
 	y_min = mcl_vars.mg_overworld_min,
 	y_max = water_level-4,
-	y_offset = function(pr) return pr:next(-4,-2) end,
+	y_offset = function(pr) return pr:next(-3,-1) end,
 	flags = "place_center_x, place_center_z, force_placement",
-	prepare = { tolerance = -1, clear = false, foundation = -2, mode = "water" },
+	prepare = { tolerance = -1, clear = false, foundation = false, mode = "water" },
 	filenames = {
 		--schematics by chmodsayshello
 		modpath.."/schematics/mcl_structures_shipwreck_full_damaged.mts",