diff --git a/data/fields/check_date.json b/data/fields/check_date.json
index 09bf66a6..c0d49cea 100644
--- a/data/fields/check_date.json
+++ b/data/fields/check_date.json
@@ -1,6 +1,11 @@
 {
     "key": "check_date",
-    "type": "text",
+    "type": "date",
     "label": "Last Checked Date",
-    "placeholder": "YYYY-MM-DD"
+    "placeholder": "YYYY-MM-DD",
+    "universal": true,
+    "terms": [
+        "survey date",
+        "last survey date"
+    ]
 }
diff --git a/data/fields/historic/wreck/date_sunk.json b/data/fields/historic/wreck/date_sunk.json
index 6c923c9b..0e1d153c 100644
--- a/data/fields/historic/wreck/date_sunk.json
+++ b/data/fields/historic/wreck/date_sunk.json
@@ -1,5 +1,5 @@
 {
     "key": "wreck:date_sunk",
-    "type": "text",
+    "type": "date",
     "label": "Date Sunk"
 }
diff --git a/data/fields/opening_date.json b/data/fields/opening_date.json
index 186b42f5..021ed1ac 100644
--- a/data/fields/opening_date.json
+++ b/data/fields/opening_date.json
@@ -1,6 +1,6 @@
 {
     "key": "opening_date",
-    "type": "text",
+    "type": "date",
     "label": "Expected Opening Date",
     "placeholder": "YYYY-MM-DD"
 }
diff --git a/data/fields/start_date.json b/data/fields/start_date.json
index 533b4c75..8501280b 100644
--- a/data/fields/start_date.json
+++ b/data/fields/start_date.json
@@ -1,6 +1,6 @@
 {
     "key": "start_date",
-    "type": "text",
+    "type": "date",
     "universal": true,
     "label": "Start Date",
     "placeholder": "YYYY-MM-DD",
diff --git a/data/fields/survey/date.json b/data/fields/survey/date.json
index e29075eb..2cf7e270 100644
--- a/data/fields/survey/date.json
+++ b/data/fields/survey/date.json
@@ -1,5 +1,5 @@
 {
     "key": "survey:date",
-    "type": "text",
+    "type": "date",
     "label": "Last Survey Date"
 }
diff --git a/interim/source_strings.yaml b/interim/source_strings.yaml
index c8f08b12..0a9a745f 100644
--- a/interim/source_strings.yaml
+++ b/interim/source_strings.yaml
@@ -779,6 +779,8 @@ en:
         label: Last Checked Date
         # check_date field placeholder
         placeholder: YYYY-MM-DD
+        # 'terms: survey date,last survey date'
+        terms: '[translate with synonyms or related terms for ''Last Checked Date'', separated by commas]'
       circumference:
         # circumference=*
         label: Circumference (at Breast Height)