diff --git a/data/mapgen/OpenOcean.xml b/data/mapgen/OpenOcean.xml
new file mode 100644
index 0000000000..d1c773ade3
--- /dev/null
+++ b/data/mapgen/OpenOcean.xml
@@ -0,0 +1,111 @@
+<?xml version="1.0"?>
+<!--
+# MegaMek Data (C) 2026 by The MegaMek Team is licensed under CC BY-NC-SA 4.0.
+# To view a copy of this license, visit https://creativecommons.org/licenses/by-nc-sa/4.0/
+#
+# NOTICE: The MegaMek organization is a non-profit group of volunteers
+# creating free software for the BattleTech community.
+#
+# MechWarrior, BattleMech, `Mech and AeroTech are registered trademarks
+# of The Topps Company, Inc. All Rights Reserved.
+#
+# Catalyst Game Labs and the Catalyst Game Labs logo are trademarks of
+# InMediaRes Productions, LLC.
+#
+# MechWarrior Copyright Microsoft Corporation. MegaMek Data was created under
+# Microsoft's "Game Content Usage Rules"
+# <https://www.xbox.com/en-US/developers/rules> and it is not endorsed by or
+# affiliated with Microsoft.
+-->
+<!--
+Open ocean: a flat sea floor (levels -1..+1) that PROBFLOOD 100 with FXMOD 2 submerges entirely,
+producing a board of open water at depths 1-3 with no land, buildings, or foliage.
+-->
+<ENVIRONMENT>
+    <WIDTH>30</WIDTH>
+    <HEIGHT>30</HEIGHT>
+    <HILLYNESS>30</HILLYNESS>
+    <CLIFFS>0</CLIFFS>
+    <HILLELEVATIONRANGE>1</HILLELEVATIONRANGE>
+    <HILLINVERTPROB>50</HILLINVERTPROB>
+    <WATERMINSPOTS>0</WATERMINSPOTS>
+    <WATERMAXSPOTS>0</WATERMAXSPOTS>
+    <WATERMINHEXES>0</WATERMINHEXES>
+    <WATERMAXHEXES>0</WATERMAXHEXES>
+    <WATERDEEPPROB>100</WATERDEEPPROB>
+    <FORESTMINSPOTS>0</FORESTMINSPOTS>
+    <FORESTMAXSPOTS>0</FORESTMAXSPOTS>
+    <FORESTMINHEXES>0</FORESTMINHEXES>
+    <FORESTMAXHEXES>0</FORESTMAXHEXES>
+    <FORESTHEAVYPROB>0</FORESTHEAVYPROB>
+    <FOLIAGEMINSPOTS>0</FOLIAGEMINSPOTS>
+    <FOLIAGEMAXSPOTS>0</FOLIAGEMAXSPOTS>
+    <FOLIAGEMINHEXES>0</FOLIAGEMINHEXES>
+    <FOLIAGEMAXHEXES>0</FOLIAGEMAXHEXES>
+    <FOLIAGEHEAVYPROB>0</FOLIAGEHEAVYPROB>
+    <ROUGHMINSPOTS>0</ROUGHMINSPOTS>
+    <ROUGHMAXSPOTS>0</ROUGHMAXSPOTS>
+    <ROUGHMINHEXES>0</ROUGHMINHEXES>
+    <ROUGHMAXHEXES>0</ROUGHMAXHEXES>
+    <SANDMINSPOTS>0</SANDMINSPOTS>
+    <SANDMAXSPOTS>0</SANDMAXSPOTS>
+    <SANDMINHEXES>0</SANDMINHEXES>
+    <SANDMAXHEXES>0</SANDMAXHEXES>
+    <SNOWMINSPOTS>0</SNOWMINSPOTS>
+    <SNOWMAXSPOTS>0</SNOWMAXSPOTS>
+    <SNOWMINHEXES>0</SNOWMINHEXES>
+    <SNOWMAXHEXES>0</SNOWMAXHEXES>
+    <PLANTEDFIELDMINSPOTS>0</PLANTEDFIELDMINSPOTS>
+    <PLANTEDFIELDMAXSPOTS>0</PLANTEDFIELDMAXSPOTS>
+    <PLANTEDFIELDMINHEXES>0</PLANTEDFIELDMINHEXES>
+    <PLANTEDFIELDMAXHEXES>0</PLANTEDFIELDMAXHEXES>
+    <SWAMPMINSPOTS>0</SWAMPMINSPOTS>
+    <SWAMPMAXSPOTS>0</SWAMPMAXSPOTS>
+    <SWAMPMINHEXES>0</SWAMPMINHEXES>
+    <SWAMPMAXHEXES>0</SWAMPMAXHEXES>
+    <PAVEMENTMINSPOTS>0</PAVEMENTMINSPOTS>
+    <PAVEMENTMAXSPOTS>0</PAVEMENTMAXSPOTS>
+    <PAVEMENTMINHEXES>0</PAVEMENTMINHEXES>
+    <PAVEMENTMAXHEXES>0</PAVEMENTMAXHEXES>
+    <RUBBLEMINSPOTS>0</RUBBLEMINSPOTS>
+    <RUBBLEMAXSPOTS>0</RUBBLEMAXSPOTS>
+    <RUBBLEMINHEXES>0</RUBBLEMINHEXES>
+    <RUBBLEMAXHEXES>0</RUBBLEMAXHEXES>
+    <FORTIFIEDMINSPOTS>0</FORTIFIEDMINSPOTS>
+    <FORTIFIEDMAXSPOTS>0</FORTIFIEDMAXSPOTS>
+    <FORTIFIEDMINHEXES>0</FORTIFIEDMINHEXES>
+    <FORTIFIEDMAXHEXES>0</FORTIFIEDMAXHEXES>
+    <ICEMINSPOTS>0</ICEMINSPOTS>
+    <ICEMAXSPOTS>0</ICEMAXSPOTS>
+    <ICEMINHEXES>0</ICEMINHEXES>
+    <ICEMAXHEXES>0</ICEMAXHEXES>
+    <ROADPROB>0</ROADPROB>
+    <RIVERPROB>0</RIVERPROB>
+    <CRATEPROB>0</CRATEPROB>
+    <CRATERMINRADIUS>0</CRATERMINRADIUS>
+    <CRATERMAXRADIUS>0</CRATERMAXRADIUS>
+    <CRATERMAXNUM>0</CRATERMAXNUM>
+    <CRATERMINNUM>0</CRATERMINNUM>
+    <ALGORITHM>0</ALGORITHM>
+    <THEME>grass</THEME>
+    <PROBFLOOD>100</PROBFLOOD>
+    <PROBFORESTFIRE>0</PROBFORESTFIRE>
+    <PROBFREEZE>0</PROBFREEZE>
+    <PROBDROUGHT>0</PROBDROUGHT>
+    <FXMOD>2</FXMOD>
+    <CITYBLOCKS>0</CITYBLOCKS>
+    <CITYTYPE>None</CITYTYPE>
+    <MINCF>0</MINCF>
+    <MAXCF>0</MAXCF>
+    <MINFLOORS>0</MINFLOORS>
+    <MAXFLOORS>0</MAXFLOORS>
+    <CITYDENSITY>0</CITYDENSITY>
+    <TOWNSIZE>0</TOWNSIZE>
+    <INVERTNEGATIVETERRAIN>0</INVERTNEGATIVETERRAIN>
+    <MOUNTPEAKS>0</MOUNTPEAKS>
+    <MOUNTWIDTHMIN>7</MOUNTWIDTHMIN>
+    <MOUNTWIDTHMAX>10</MOUNTWIDTHMAX>
+    <MOUNTHEIGHTMIN>4</MOUNTHEIGHTMIN>
+    <MOUNTHEIGHTMAX>6</MOUNTHEIGHTMAX>
+    <MOUNTSTYLE>0</MOUNTSTYLE>
+</ENVIRONMENT>
diff --git a/data/mapgen/OpenOceanCold.xml b/data/mapgen/OpenOceanCold.xml
new file mode 100644
index 0000000000..6b83e15d06
--- /dev/null
+++ b/data/mapgen/OpenOceanCold.xml
@@ -0,0 +1,111 @@
+<?xml version="1.0"?>
+<!--
+# MegaMek Data (C) 2026 by The MegaMek Team is licensed under CC BY-NC-SA 4.0.
+# To view a copy of this license, visit https://creativecommons.org/licenses/by-nc-sa/4.0/
+#
+# NOTICE: The MegaMek organization is a non-profit group of volunteers
+# creating free software for the BattleTech community.
+#
+# MechWarrior, BattleMech, `Mech and AeroTech are registered trademarks
+# of The Topps Company, Inc. All Rights Reserved.
+#
+# Catalyst Game Labs and the Catalyst Game Labs logo are trademarks of
+# InMediaRes Productions, LLC.
+#
+# MechWarrior Copyright Microsoft Corporation. MegaMek Data was created under
+# Microsoft's "Game Content Usage Rules"
+# <https://www.xbox.com/en-US/developers/rules> and it is not endorsed by or
+# affiliated with Microsoft.
+-->
+<!--
+Open ocean: a flat sea floor (levels -1..+1) that PROBFLOOD 100 with FXMOD 2 submerges entirely,
+producing a board of open water at depths 1-3 with no land, buildings, or foliage.
+-->
+<ENVIRONMENT>
+    <WIDTH>30</WIDTH>
+    <HEIGHT>30</HEIGHT>
+    <HILLYNESS>30</HILLYNESS>
+    <CLIFFS>0</CLIFFS>
+    <HILLELEVATIONRANGE>1</HILLELEVATIONRANGE>
+    <HILLINVERTPROB>50</HILLINVERTPROB>
+    <WATERMINSPOTS>0</WATERMINSPOTS>
+    <WATERMAXSPOTS>0</WATERMAXSPOTS>
+    <WATERMINHEXES>0</WATERMINHEXES>
+    <WATERMAXHEXES>0</WATERMAXHEXES>
+    <WATERDEEPPROB>100</WATERDEEPPROB>
+    <FORESTMINSPOTS>0</FORESTMINSPOTS>
+    <FORESTMAXSPOTS>0</FORESTMAXSPOTS>
+    <FORESTMINHEXES>0</FORESTMINHEXES>
+    <FORESTMAXHEXES>0</FORESTMAXHEXES>
+    <FORESTHEAVYPROB>0</FORESTHEAVYPROB>
+    <FOLIAGEMINSPOTS>0</FOLIAGEMINSPOTS>
+    <FOLIAGEMAXSPOTS>0</FOLIAGEMAXSPOTS>
+    <FOLIAGEMINHEXES>0</FOLIAGEMINHEXES>
+    <FOLIAGEMAXHEXES>0</FOLIAGEMAXHEXES>
+    <FOLIAGEHEAVYPROB>0</FOLIAGEHEAVYPROB>
+    <ROUGHMINSPOTS>0</ROUGHMINSPOTS>
+    <ROUGHMAXSPOTS>0</ROUGHMAXSPOTS>
+    <ROUGHMINHEXES>0</ROUGHMINHEXES>
+    <ROUGHMAXHEXES>0</ROUGHMAXHEXES>
+    <SANDMINSPOTS>0</SANDMINSPOTS>
+    <SANDMAXSPOTS>0</SANDMAXSPOTS>
+    <SANDMINHEXES>0</SANDMINHEXES>
+    <SANDMAXHEXES>0</SANDMAXHEXES>
+    <SNOWMINSPOTS>0</SNOWMINSPOTS>
+    <SNOWMAXSPOTS>0</SNOWMAXSPOTS>
+    <SNOWMINHEXES>0</SNOWMINHEXES>
+    <SNOWMAXHEXES>0</SNOWMAXHEXES>
+    <PLANTEDFIELDMINSPOTS>0</PLANTEDFIELDMINSPOTS>
+    <PLANTEDFIELDMAXSPOTS>0</PLANTEDFIELDMAXSPOTS>
+    <PLANTEDFIELDMINHEXES>0</PLANTEDFIELDMINHEXES>
+    <PLANTEDFIELDMAXHEXES>0</PLANTEDFIELDMAXHEXES>
+    <SWAMPMINSPOTS>0</SWAMPMINSPOTS>
+    <SWAMPMAXSPOTS>0</SWAMPMAXSPOTS>
+    <SWAMPMINHEXES>0</SWAMPMINHEXES>
+    <SWAMPMAXHEXES>0</SWAMPMAXHEXES>
+    <PAVEMENTMINSPOTS>0</PAVEMENTMINSPOTS>
+    <PAVEMENTMAXSPOTS>0</PAVEMENTMAXSPOTS>
+    <PAVEMENTMINHEXES>0</PAVEMENTMINHEXES>
+    <PAVEMENTMAXHEXES>0</PAVEMENTMAXHEXES>
+    <RUBBLEMINSPOTS>0</RUBBLEMINSPOTS>
+    <RUBBLEMAXSPOTS>0</RUBBLEMAXSPOTS>
+    <RUBBLEMINHEXES>0</RUBBLEMINHEXES>
+    <RUBBLEMAXHEXES>0</RUBBLEMAXHEXES>
+    <FORTIFIEDMINSPOTS>0</FORTIFIEDMINSPOTS>
+    <FORTIFIEDMAXSPOTS>0</FORTIFIEDMAXSPOTS>
+    <FORTIFIEDMINHEXES>0</FORTIFIEDMINHEXES>
+    <FORTIFIEDMAXHEXES>0</FORTIFIEDMAXHEXES>
+    <ICEMINSPOTS>0</ICEMINSPOTS>
+    <ICEMAXSPOTS>0</ICEMAXSPOTS>
+    <ICEMINHEXES>0</ICEMINHEXES>
+    <ICEMAXHEXES>0</ICEMAXHEXES>
+    <ROADPROB>0</ROADPROB>
+    <RIVERPROB>0</RIVERPROB>
+    <CRATEPROB>0</CRATEPROB>
+    <CRATERMINRADIUS>0</CRATERMINRADIUS>
+    <CRATERMAXRADIUS>0</CRATERMAXRADIUS>
+    <CRATERMAXNUM>0</CRATERMAXNUM>
+    <CRATERMINNUM>0</CRATERMINNUM>
+    <ALGORITHM>0</ALGORITHM>
+    <THEME>snow</THEME>
+    <PROBFLOOD>100</PROBFLOOD>
+    <PROBFORESTFIRE>0</PROBFORESTFIRE>
+    <PROBFREEZE>0</PROBFREEZE>
+    <PROBDROUGHT>0</PROBDROUGHT>
+    <FXMOD>2</FXMOD>
+    <CITYBLOCKS>0</CITYBLOCKS>
+    <CITYTYPE>None</CITYTYPE>
+    <MINCF>0</MINCF>
+    <MAXCF>0</MAXCF>
+    <MINFLOORS>0</MINFLOORS>
+    <MAXFLOORS>0</MAXFLOORS>
+    <CITYDENSITY>0</CITYDENSITY>
+    <TOWNSIZE>0</TOWNSIZE>
+    <INVERTNEGATIVETERRAIN>0</INVERTNEGATIVETERRAIN>
+    <MOUNTPEAKS>0</MOUNTPEAKS>
+    <MOUNTWIDTHMIN>7</MOUNTWIDTHMIN>
+    <MOUNTWIDTHMAX>10</MOUNTWIDTHMAX>
+    <MOUNTHEIGHTMIN>4</MOUNTHEIGHTMIN>
+    <MOUNTHEIGHTMAX>6</MOUNTHEIGHTMAX>
+    <MOUNTSTYLE>0</MOUNTSTYLE>
+</ENVIRONMENT>
diff --git a/data/mapgen/OpenOceanFrozen.xml b/data/mapgen/OpenOceanFrozen.xml
new file mode 100644
index 0000000000..257352f6d4
--- /dev/null
+++ b/data/mapgen/OpenOceanFrozen.xml
@@ -0,0 +1,111 @@
+<?xml version="1.0"?>
+<!--
+# MegaMek Data (C) 2026 by The MegaMek Team is licensed under CC BY-NC-SA 4.0.
+# To view a copy of this license, visit https://creativecommons.org/licenses/by-nc-sa/4.0/
+#
+# NOTICE: The MegaMek organization is a non-profit group of volunteers
+# creating free software for the BattleTech community.
+#
+# MechWarrior, BattleMech, `Mech and AeroTech are registered trademarks
+# of The Topps Company, Inc. All Rights Reserved.
+#
+# Catalyst Game Labs and the Catalyst Game Labs logo are trademarks of
+# InMediaRes Productions, LLC.
+#
+# MechWarrior Copyright Microsoft Corporation. MegaMek Data was created under
+# Microsoft's "Game Content Usage Rules"
+# <https://www.xbox.com/en-US/developers/rules> and it is not endorsed by or
+# affiliated with Microsoft.
+-->
+<!--
+Open ocean: a flat sea floor (levels -1..+1) that PROBFLOOD 100 with FXMOD 2 submerges entirely,
+producing a board of open water at depths 1-3 with no land, buildings, or foliage.
+-->
+<ENVIRONMENT>
+    <WIDTH>30</WIDTH>
+    <HEIGHT>30</HEIGHT>
+    <HILLYNESS>30</HILLYNESS>
+    <CLIFFS>0</CLIFFS>
+    <HILLELEVATIONRANGE>1</HILLELEVATIONRANGE>
+    <HILLINVERTPROB>50</HILLINVERTPROB>
+    <WATERMINSPOTS>0</WATERMINSPOTS>
+    <WATERMAXSPOTS>0</WATERMAXSPOTS>
+    <WATERMINHEXES>0</WATERMINHEXES>
+    <WATERMAXHEXES>0</WATERMAXHEXES>
+    <WATERDEEPPROB>100</WATERDEEPPROB>
+    <FORESTMINSPOTS>0</FORESTMINSPOTS>
+    <FORESTMAXSPOTS>0</FORESTMAXSPOTS>
+    <FORESTMINHEXES>0</FORESTMINHEXES>
+    <FORESTMAXHEXES>0</FORESTMAXHEXES>
+    <FORESTHEAVYPROB>0</FORESTHEAVYPROB>
+    <FOLIAGEMINSPOTS>0</FOLIAGEMINSPOTS>
+    <FOLIAGEMAXSPOTS>0</FOLIAGEMAXSPOTS>
+    <FOLIAGEMINHEXES>0</FOLIAGEMINHEXES>
+    <FOLIAGEMAXHEXES>0</FOLIAGEMAXHEXES>
+    <FOLIAGEHEAVYPROB>0</FOLIAGEHEAVYPROB>
+    <ROUGHMINSPOTS>0</ROUGHMINSPOTS>
+    <ROUGHMAXSPOTS>0</ROUGHMAXSPOTS>
+    <ROUGHMINHEXES>0</ROUGHMINHEXES>
+    <ROUGHMAXHEXES>0</ROUGHMAXHEXES>
+    <SANDMINSPOTS>0</SANDMINSPOTS>
+    <SANDMAXSPOTS>0</SANDMAXSPOTS>
+    <SANDMINHEXES>0</SANDMINHEXES>
+    <SANDMAXHEXES>0</SANDMAXHEXES>
+    <SNOWMINSPOTS>0</SNOWMINSPOTS>
+    <SNOWMAXSPOTS>0</SNOWMAXSPOTS>
+    <SNOWMINHEXES>0</SNOWMINHEXES>
+    <SNOWMAXHEXES>0</SNOWMAXHEXES>
+    <PLANTEDFIELDMINSPOTS>0</PLANTEDFIELDMINSPOTS>
+    <PLANTEDFIELDMAXSPOTS>0</PLANTEDFIELDMAXSPOTS>
+    <PLANTEDFIELDMINHEXES>0</PLANTEDFIELDMINHEXES>
+    <PLANTEDFIELDMAXHEXES>0</PLANTEDFIELDMAXHEXES>
+    <SWAMPMINSPOTS>0</SWAMPMINSPOTS>
+    <SWAMPMAXSPOTS>0</SWAMPMAXSPOTS>
+    <SWAMPMINHEXES>0</SWAMPMINHEXES>
+    <SWAMPMAXHEXES>0</SWAMPMAXHEXES>
+    <PAVEMENTMINSPOTS>0</PAVEMENTMINSPOTS>
+    <PAVEMENTMAXSPOTS>0</PAVEMENTMAXSPOTS>
+    <PAVEMENTMINHEXES>0</PAVEMENTMINHEXES>
+    <PAVEMENTMAXHEXES>0</PAVEMENTMAXHEXES>
+    <RUBBLEMINSPOTS>0</RUBBLEMINSPOTS>
+    <RUBBLEMAXSPOTS>0</RUBBLEMAXSPOTS>
+    <RUBBLEMINHEXES>0</RUBBLEMINHEXES>
+    <RUBBLEMAXHEXES>0</RUBBLEMAXHEXES>
+    <FORTIFIEDMINSPOTS>0</FORTIFIEDMINSPOTS>
+    <FORTIFIEDMAXSPOTS>0</FORTIFIEDMAXSPOTS>
+    <FORTIFIEDMINHEXES>0</FORTIFIEDMINHEXES>
+    <FORTIFIEDMAXHEXES>0</FORTIFIEDMAXHEXES>
+    <ICEMINSPOTS>0</ICEMINSPOTS>
+    <ICEMAXSPOTS>0</ICEMAXSPOTS>
+    <ICEMINHEXES>0</ICEMINHEXES>
+    <ICEMAXHEXES>0</ICEMAXHEXES>
+    <ROADPROB>0</ROADPROB>
+    <RIVERPROB>0</RIVERPROB>
+    <CRATEPROB>0</CRATEPROB>
+    <CRATERMINRADIUS>0</CRATERMINRADIUS>
+    <CRATERMAXRADIUS>0</CRATERMAXRADIUS>
+    <CRATERMAXNUM>0</CRATERMAXNUM>
+    <CRATERMINNUM>0</CRATERMINNUM>
+    <ALGORITHM>0</ALGORITHM>
+    <THEME>snow</THEME>
+    <PROBFLOOD>100</PROBFLOOD>
+    <PROBFORESTFIRE>0</PROBFORESTFIRE>
+    <PROBFREEZE>100</PROBFREEZE>
+    <PROBDROUGHT>0</PROBDROUGHT>
+    <FXMOD>2</FXMOD>
+    <CITYBLOCKS>0</CITYBLOCKS>
+    <CITYTYPE>None</CITYTYPE>
+    <MINCF>0</MINCF>
+    <MAXCF>0</MAXCF>
+    <MINFLOORS>0</MINFLOORS>
+    <MAXFLOORS>0</MAXFLOORS>
+    <CITYDENSITY>0</CITYDENSITY>
+    <TOWNSIZE>0</TOWNSIZE>
+    <INVERTNEGATIVETERRAIN>0</INVERTNEGATIVETERRAIN>
+    <MOUNTPEAKS>0</MOUNTPEAKS>
+    <MOUNTWIDTHMIN>7</MOUNTWIDTHMIN>
+    <MOUNTWIDTHMAX>10</MOUNTWIDTHMAX>
+    <MOUNTHEIGHTMIN>4</MOUNTHEIGHTMIN>
+    <MOUNTHEIGHTMAX>6</MOUNTHEIGHTMAX>
+    <MOUNTSTYLE>0</MOUNTSTYLE>
+</ENVIRONMENT>
diff --git a/data/mapgen/OpenOceanTropical.xml b/data/mapgen/OpenOceanTropical.xml
new file mode 100644
index 0000000000..1a45a2f41f
--- /dev/null
+++ b/data/mapgen/OpenOceanTropical.xml
@@ -0,0 +1,111 @@
+<?xml version="1.0"?>
+<!--
+# MegaMek Data (C) 2026 by The MegaMek Team is licensed under CC BY-NC-SA 4.0.
+# To view a copy of this license, visit https://creativecommons.org/licenses/by-nc-sa/4.0/
+#
+# NOTICE: The MegaMek organization is a non-profit group of volunteers
+# creating free software for the BattleTech community.
+#
+# MechWarrior, BattleMech, `Mech and AeroTech are registered trademarks
+# of The Topps Company, Inc. All Rights Reserved.
+#
+# Catalyst Game Labs and the Catalyst Game Labs logo are trademarks of
+# InMediaRes Productions, LLC.
+#
+# MechWarrior Copyright Microsoft Corporation. MegaMek Data was created under
+# Microsoft's "Game Content Usage Rules"
+# <https://www.xbox.com/en-US/developers/rules> and it is not endorsed by or
+# affiliated with Microsoft.
+-->
+<!--
+Open ocean: a flat sea floor (levels -1..+1) that PROBFLOOD 100 with FXMOD 2 submerges entirely,
+producing a board of open water at depths 1-3 with no land, buildings, or foliage.
+-->
+<ENVIRONMENT>
+    <WIDTH>30</WIDTH>
+    <HEIGHT>30</HEIGHT>
+    <HILLYNESS>30</HILLYNESS>
+    <CLIFFS>0</CLIFFS>
+    <HILLELEVATIONRANGE>1</HILLELEVATIONRANGE>
+    <HILLINVERTPROB>50</HILLINVERTPROB>
+    <WATERMINSPOTS>0</WATERMINSPOTS>
+    <WATERMAXSPOTS>0</WATERMAXSPOTS>
+    <WATERMINHEXES>0</WATERMINHEXES>
+    <WATERMAXHEXES>0</WATERMAXHEXES>
+    <WATERDEEPPROB>100</WATERDEEPPROB>
+    <FORESTMINSPOTS>0</FORESTMINSPOTS>
+    <FORESTMAXSPOTS>0</FORESTMAXSPOTS>
+    <FORESTMINHEXES>0</FORESTMINHEXES>
+    <FORESTMAXHEXES>0</FORESTMAXHEXES>
+    <FORESTHEAVYPROB>0</FORESTHEAVYPROB>
+    <FOLIAGEMINSPOTS>0</FOLIAGEMINSPOTS>
+    <FOLIAGEMAXSPOTS>0</FOLIAGEMAXSPOTS>
+    <FOLIAGEMINHEXES>0</FOLIAGEMINHEXES>
+    <FOLIAGEMAXHEXES>0</FOLIAGEMAXHEXES>
+    <FOLIAGEHEAVYPROB>0</FOLIAGEHEAVYPROB>
+    <ROUGHMINSPOTS>0</ROUGHMINSPOTS>
+    <ROUGHMAXSPOTS>0</ROUGHMAXSPOTS>
+    <ROUGHMINHEXES>0</ROUGHMINHEXES>
+    <ROUGHMAXHEXES>0</ROUGHMAXHEXES>
+    <SANDMINSPOTS>0</SANDMINSPOTS>
+    <SANDMAXSPOTS>0</SANDMAXSPOTS>
+    <SANDMINHEXES>0</SANDMINHEXES>
+    <SANDMAXHEXES>0</SANDMAXHEXES>
+    <SNOWMINSPOTS>0</SNOWMINSPOTS>
+    <SNOWMAXSPOTS>0</SNOWMAXSPOTS>
+    <SNOWMINHEXES>0</SNOWMINHEXES>
+    <SNOWMAXHEXES>0</SNOWMAXHEXES>
+    <PLANTEDFIELDMINSPOTS>0</PLANTEDFIELDMINSPOTS>
+    <PLANTEDFIELDMAXSPOTS>0</PLANTEDFIELDMAXSPOTS>
+    <PLANTEDFIELDMINHEXES>0</PLANTEDFIELDMINHEXES>
+    <PLANTEDFIELDMAXHEXES>0</PLANTEDFIELDMAXHEXES>
+    <SWAMPMINSPOTS>0</SWAMPMINSPOTS>
+    <SWAMPMAXSPOTS>0</SWAMPMAXSPOTS>
+    <SWAMPMINHEXES>0</SWAMPMINHEXES>
+    <SWAMPMAXHEXES>0</SWAMPMAXHEXES>
+    <PAVEMENTMINSPOTS>0</PAVEMENTMINSPOTS>
+    <PAVEMENTMAXSPOTS>0</PAVEMENTMAXSPOTS>
+    <PAVEMENTMINHEXES>0</PAVEMENTMINHEXES>
+    <PAVEMENTMAXHEXES>0</PAVEMENTMAXHEXES>
+    <RUBBLEMINSPOTS>0</RUBBLEMINSPOTS>
+    <RUBBLEMAXSPOTS>0</RUBBLEMAXSPOTS>
+    <RUBBLEMINHEXES>0</RUBBLEMINHEXES>
+    <RUBBLEMAXHEXES>0</RUBBLEMAXHEXES>
+    <FORTIFIEDMINSPOTS>0</FORTIFIEDMINSPOTS>
+    <FORTIFIEDMAXSPOTS>0</FORTIFIEDMAXSPOTS>
+    <FORTIFIEDMINHEXES>0</FORTIFIEDMINHEXES>
+    <FORTIFIEDMAXHEXES>0</FORTIFIEDMAXHEXES>
+    <ICEMINSPOTS>0</ICEMINSPOTS>
+    <ICEMAXSPOTS>0</ICEMAXSPOTS>
+    <ICEMINHEXES>0</ICEMINHEXES>
+    <ICEMAXHEXES>0</ICEMAXHEXES>
+    <ROADPROB>0</ROADPROB>
+    <RIVERPROB>0</RIVERPROB>
+    <CRATEPROB>0</CRATEPROB>
+    <CRATERMINRADIUS>0</CRATERMINRADIUS>
+    <CRATERMAXRADIUS>0</CRATERMAXRADIUS>
+    <CRATERMAXNUM>0</CRATERMAXNUM>
+    <CRATERMINNUM>0</CRATERMINNUM>
+    <ALGORITHM>0</ALGORITHM>
+    <THEME>tropical</THEME>
+    <PROBFLOOD>100</PROBFLOOD>
+    <PROBFORESTFIRE>0</PROBFORESTFIRE>
+    <PROBFREEZE>0</PROBFREEZE>
+    <PROBDROUGHT>0</PROBDROUGHT>
+    <FXMOD>2</FXMOD>
+    <CITYBLOCKS>0</CITYBLOCKS>
+    <CITYTYPE>None</CITYTYPE>
+    <MINCF>0</MINCF>
+    <MAXCF>0</MAXCF>
+    <MINFLOORS>0</MINFLOORS>
+    <MAXFLOORS>0</MAXFLOORS>
+    <CITYDENSITY>0</CITYDENSITY>
+    <TOWNSIZE>0</TOWNSIZE>
+    <INVERTNEGATIVETERRAIN>0</INVERTNEGATIVETERRAIN>
+    <MOUNTPEAKS>0</MOUNTPEAKS>
+    <MOUNTWIDTHMIN>7</MOUNTWIDTHMIN>
+    <MOUNTWIDTHMAX>10</MOUNTWIDTHMAX>
+    <MOUNTHEIGHTMIN>4</MOUNTHEIGHTMIN>
+    <MOUNTHEIGHTMAX>6</MOUNTHEIGHTMAX>
+    <MOUNTSTYLE>0</MOUNTSTYLE>
+</ENVIRONMENT>
diff --git a/data/stratconbiomedefinitions/StratConBiomeManifest.xml b/data/stratconbiomedefinitions/StratConBiomeManifest.xml
index 697de687e3..75cfe0f316 100644
--- a/data/stratconbiomedefinitions/StratConBiomeManifest.xml
+++ b/data/stratconbiomedefinitions/StratConBiomeManifest.xml
@@ -226,11 +226,10 @@
         <entry>
             <key>ColdSea</key>
             <value>
-                <mapTypes>ColdSeaCoastalFort</mapTypes>
-                <mapTypes>ColdSeaCoastalRoads</mapTypes>
                 <mapTypes>ColdSeaDeltas</mapTypes>
                 <mapTypes>ColdSeaFjords</mapTypes>
                 <mapTypes>ColdSeaFjordsSteep</mapTypes>
+                <mapTypes>OpenOceanCold</mapTypes>
             </value>
         </entry>
         <entry>
@@ -240,6 +239,7 @@
                 <mapTypes>CityCold</mapTypes>
                 <mapTypes>TownCold</mapTypes>
                 <mapTypes>RuralHomesteadsCold</mapTypes>
+                <mapTypes>ColdSeaCoastalRoads</mapTypes>
             </value>
         </entry>
         <entry>
@@ -307,6 +307,7 @@
             <key>FrozenSea</key>
             <value>
                 <mapTypes>FrozenSea</mapTypes>
+                <mapTypes>OpenOceanFrozen</mapTypes>
             </value>
         </entry>
         <entry>
@@ -393,6 +394,7 @@
             <value>
                 <mapTypes>SeaHotDesert</mapTypes>
                 <mapTypes>SeaHotJungle</mapTypes>
+                <mapTypes>OpenOceanTropical</mapTypes>
             </value>
         </entry>
         <entry>
@@ -457,13 +459,9 @@
         <entry>
             <key>Sea</key>
             <value>
-                <mapTypes>Sea-CoastalFort</mapTypes>
-                <mapTypes>Sea-CoastalRoads</mapTypes>
                 <mapTypes>Sea-Deltas</mapTypes>
                 <mapTypes>Sea-Fjord</mapTypes>
-                <mapTypes>Sea-MangroveCliffs</mapTypes>
-                <mapTypes>Sea-SaltwaterMarsh</mapTypes>
-                <mapTypes>Seaport</mapTypes>
+                <mapTypes>OpenOcean</mapTypes>
             </value>
         </entry>
         <entry>
@@ -500,6 +498,8 @@
                 <mapTypes>Muddy-swamp - Jazz</mapTypes>
                 <mapTypes>River-wetlands - Jazz</mapTypes>
                 <mapTypes>Swamp - Jazz</mapTypes>
+                <mapTypes>Sea-MangroveCliffs</mapTypes>
+                <mapTypes>Sea-SaltwaterMarsh</mapTypes>
             </value>
         </entry>
         <entry>
@@ -525,6 +525,7 @@
                 <mapTypes>PlainsOutpost</mapTypes>
                 <mapTypes>PlainsTown</mapTypes>
                 <mapTypes>Town-wooded</mapTypes>
+                <mapTypes>Sea-CoastalFort</mapTypes>
             </value>
         </entry>
         <entry>
@@ -538,6 +539,7 @@
                 <mapTypes>Town-ruin</mapTypes>
                 <mapTypes>Seaport</mapTypes>
                 <mapTypes>Town-mining</mapTypes>
+                <mapTypes>Sea-CoastalRoads</mapTypes>
             </value>
         </entry>
     </biomeMapTypes>