diff --git a/config.yaml b/config.yaml
index 313f65f..06c91c6 100644
--- a/config.yaml
+++ b/config.yaml
@@ -81,6 +81,8 @@ submodels:
         - /g/data/vk83/configurations/inputs/access-esm1p5/modern/share/ocean/shortwave_penetration/global.1deg/2020.05.19/ssw_atten_depth.nc
         # Grids
         - /g/data/vk83/configurations/inputs/access-esm1p5/modern/share/ocean/grids/mosaic/global.1deg/2020.05.19/grid_spec.nc
+        # Basin mask
+        - /g/data/vk83/configurations/inputs/access-esm1p5/modern/share/ocean/basins/global.1deg/2020.05.19/basin_mask.nc
 
     - name: ice
       model: cice
diff --git a/manifests/input.yaml b/manifests/input.yaml
index 777c88a..27f1a96 100644
--- a/manifests/input.yaml
+++ b/manifests/input.yaml
@@ -296,6 +296,11 @@ work/ice/INPUT/monthly_sstsss.nc:
   hashes:
     binhash: 49aab10f25c58a9a0ffa5617847050ff
     md5: 323d4c605f83f4d7d3126da70153c2ed
+work/ocean/INPUT/basin_mask.nc:
+  fullpath: /g/data/vk83/configurations/inputs/access-esm1p5/modern/share/ocean/basins/global.1deg/2020.05.19/basin_mask.nc
+  hashes:
+    binhash: 98462c5ebc1edda0f42ca61be74801e6
+    md5: 20fd8740f24ca95c7c086343077e9c0d
 work/ocean/INPUT/bgc_param.nc:
   fullpath: /g/data/vk83/configurations/inputs/access-esm1p5/share/ocean/biogeochemistry/global.1deg/2024.07.12/bgc_param.nc
   hashes:
diff --git a/ocean/input.nml b/ocean/input.nml
index 93fc0ef..cf8c8d2 100644
--- a/ocean/input.nml
+++ b/ocean/input.nml
@@ -486,6 +486,7 @@
  &ocean_tracer_advect_nml
       debug_this_module=.false.
       advect_sweby_all=.true.
+      read_basin_mask=.true.
 /
 
  &ocean_tracer_diag_nml