diff --git a/megamek/src/megamek/common/MiscType.java b/megamek/src/megamek/common/MiscType.java
index e855b204397..0456763e39a 100644
--- a/megamek/src/megamek/common/MiscType.java
+++ b/megamek/src/megamek/common/MiscType.java
@@ -7788,7 +7788,7 @@ public static MiscType createISNavalTugAdaptor() {
         misc.addLookupName("CLNavalTugAdaptor");
         misc.flags = misc.flags.or(F_NAVAL_TUG_ADAPTOR).or(F_SC_EQUIPMENT).or(F_DS_EQUIPMENT).or(F_WS_EQUIPMENT);
         misc.rulesRefs = "334, TO";
-        misc.techAdvancement.setTechBase(TECH_BASE_ALL).setIntroLevel(false).setUnofficial(false).setTechRating(RATING_F)
+        misc.techAdvancement.setTechBase(TECH_BASE_ALL).setIntroLevel(false).setUnofficial(false).setTechRating(RATING_C)
                 .setAvailability(RATING_C, RATING_C, RATING_C, RATING_C)
                 .setAdvancement(DATE_ES, DATE_ES, DATE_ES, DATE_NONE, DATE_NONE)
                 .setApproximate(false, false, false, false, false).setStaticTechLevel(SimpleTechLevel.ADVANCED);