diff --git a/params/ardupilot/ArduRover/4.6/Navigator/BlueBoat120.params b/params/ardupilot/ArduRover/4.6/Navigator/BlueBoat120.params
index a68ff74..552d18b 100644
--- a/params/ardupilot/ArduRover/4.6/Navigator/BlueBoat120.params
+++ b/params/ardupilot/ArduRover/4.6/Navigator/BlueBoat120.params
@@ -290,7 +290,7 @@ EK3_RNG_M_NSE    0.5
 EK3_RNG_USE_HGT  -1
 EK3_RNG_USE_SPD  2
 EK3_SRC1_POSXY   3
-EK3_SRC1_POSZ    1
+EK3_SRC1_POSZ    3
 EK3_SRC1_VELXY   3
 EK3_SRC1_VELZ    3
 EK3_SRC1_YAW     1
@@ -358,9 +358,9 @@ GPS1_COM_PORT    1
 GPS1_DELAY_MS    0
 GPS1_GNSS_MODE   0
 GPS1_MB_TYPE     0
-GPS1_POS_X       0
-GPS1_POS_Y       0
-GPS1_POS_Z       0
+GPS1_POS_X       0.16
+GPS1_POS_Y       0.365
+GPS1_POS_Z       -0.22
 GPS1_RATE_MS     200
 GPS1_TYPE        1
 GPS2_TYPE        0
@@ -426,9 +426,9 @@ INS_LOG_BAT_LGCT 32
 INS_LOG_BAT_LGIN 20
 INS_LOG_BAT_MASK 0
 INS_LOG_BAT_OPT  0
-INS_POS1_X       0
-INS_POS1_Y       0
-INS_POS1_Z       0
+INS_POS1_X       0.16
+INS_POS1_Y       0.365
+INS_POS1_Z       -0.12
 INS_POS2_X       0
 INS_POS2_Y       0
 INS_POS2_Z       0