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-rw-r--r--core/dive.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/core/dive.h b/core/dive.h
index 7e45f1c09..b642c3031 100644
--- a/core/dive.h
+++ b/core/dive.h
@@ -158,6 +158,7 @@ struct dive {
pressure_t surface_pressure;
duration_t duration;
int salinity; // kg per 10000 l
+ int user_salinity; // water density reflecting a user-specified type
struct tag_entry *tag_list;
struct divecomputer dc;