diff --git a/modules/aerodyn/src/AeroDyn.f90 b/modules/aerodyn/src/AeroDyn.f90
index e5fb77ad21..7e7e7c4493 100644
--- a/modules/aerodyn/src/AeroDyn.f90
+++ b/modules/aerodyn/src/AeroDyn.f90
@@ -1031,7 +1031,7 @@ subroutine Init_u( u, p, p_AD, InputFileData, InitInp, errStat, errMsg )
       if (errStat >= AbortErrLev) return
             
          ! set node initial position/orientation
-      position = InitInp%HubPosition
+      position = InitInp%NacellePosition
       position(1:2) = 0
       call MeshPositionNode(u%NacelleMotion, 1, position, errStat2, errMsg2, orient=InitInp%NacelleOrientation)
          call SetErrStat( errStat2, errMsg2, errStat, errMsg, RoutineName )
diff --git a/modules/aerodyn/src/AeroDyn_Registry.txt b/modules/aerodyn/src/AeroDyn_Registry.txt
index 251e4227f9..490f757e83 100644
--- a/modules/aerodyn/src/AeroDyn_Registry.txt
+++ b/modules/aerodyn/src/AeroDyn_Registry.txt
@@ -42,6 +42,7 @@ typedef	^	RotInitInputType	ReKi	HubPosition	{3}	-	-	"X-Y-Z reference position of
 typedef	^	RotInitInputType	R8Ki	HubOrientation	{3}{3}	-	-	"DCM reference orientation of hub"	-
 typedef	^	RotInitInputType	ReKi	BladeRootPosition	{:}{:}	-	-	"X-Y-Z reference position of each blade root (3 x NumBlades)"	m
 typedef	^	RotInitInputType	R8Ki	BladeRootOrientation	{:}{:}{:}	-	-	"DCM reference orientation of blade roots (3x3 x NumBlades)"	-
+typedef	^	RotInitInputType	R8Ki	NacellePosition	{3}	-	-	"X-Y-Z reference position of hub"	m
 typedef	^	RotInitInputType	R8Ki	NacelleOrientation	{3}{3}	-	-	"DCM reference orientation of nacelle"	-
 typedef	^	RotInitInputType	IntKi	AeroProjMod   	-	0	-	"Flag to switch between different projection models"	-
 
diff --git a/modules/aerodyn/src/AeroDyn_Types.f90 b/modules/aerodyn/src/AeroDyn_Types.f90
index 0707dce2fb..ca314157ad 100644
--- a/modules/aerodyn/src/AeroDyn_Types.f90
+++ b/modules/aerodyn/src/AeroDyn_Types.f90
@@ -57,6 +57,7 @@ MODULE AeroDyn_Types
     REAL(R8Ki) , DIMENSION(1:3,1:3)  :: HubOrientation      !< DCM reference orientation of hub [-]
     REAL(ReKi) , DIMENSION(:,:), ALLOCATABLE  :: BladeRootPosition      !< X-Y-Z reference position of each blade root (3 x NumBlades) [m]
     REAL(R8Ki) , DIMENSION(:,:,:), ALLOCATABLE  :: BladeRootOrientation      !< DCM reference orientation of blade roots (3x3 x NumBlades) [-]
+    REAL(R8Ki) , DIMENSION(1:3)  :: NacellePosition      !< X-Y-Z reference position of hub [m]
     REAL(R8Ki) , DIMENSION(1:3,1:3)  :: NacelleOrientation      !< DCM reference orientation of nacelle [-]
     INTEGER(IntKi)  :: AeroProjMod = 0      !< Flag to switch between different projection models [-]
   END TYPE RotInitInputType
@@ -416,6 +417,7 @@ SUBROUTINE AD_CopyRotInitInputType( SrcRotInitInputTypeData, DstRotInitInputType
   END IF
     DstRotInitInputTypeData%BladeRootOrientation = SrcRotInitInputTypeData%BladeRootOrientation
 ENDIF
+    DstRotInitInputTypeData%NacellePosition = SrcRotInitInputTypeData%NacellePosition
     DstRotInitInputTypeData%NacelleOrientation = SrcRotInitInputTypeData%NacelleOrientation
     DstRotInitInputTypeData%AeroProjMod = SrcRotInitInputTypeData%AeroProjMod
  END SUBROUTINE AD_CopyRotInitInputType
@@ -485,6 +487,7 @@ SUBROUTINE AD_PackRotInitInputType( ReKiBuf, DbKiBuf, IntKiBuf, Indata, ErrStat,
     Int_BufSz   = Int_BufSz   + 2*3  ! BladeRootOrientation upper/lower bounds for each dimension
       Db_BufSz   = Db_BufSz   + SIZE(InData%BladeRootOrientation)  ! BladeRootOrientation
   END IF
+      Db_BufSz   = Db_BufSz   + SIZE(InData%NacellePosition)  ! NacellePosition
       Db_BufSz   = Db_BufSz   + SIZE(InData%NacelleOrientation)  ! NacelleOrientation
       Int_BufSz  = Int_BufSz  + 1  ! AeroProjMod
   IF ( Re_BufSz  .GT. 0 ) THEN 
@@ -571,6 +574,10 @@ SUBROUTINE AD_PackRotInitInputType( ReKiBuf, DbKiBuf, IntKiBuf, Indata, ErrStat,
         END DO
       END DO
   END IF
+    DO i1 = LBOUND(InData%NacellePosition,1), UBOUND(InData%NacellePosition,1)
+      DbKiBuf(Db_Xferred) = InData%NacellePosition(i1)
+      Db_Xferred = Db_Xferred + 1
+    END DO
     DO i2 = LBOUND(InData%NacelleOrientation,2), UBOUND(InData%NacelleOrientation,2)
       DO i1 = LBOUND(InData%NacelleOrientation,1), UBOUND(InData%NacelleOrientation,1)
         DbKiBuf(Db_Xferred) = InData%NacelleOrientation(i1,i2)
@@ -680,6 +687,12 @@ SUBROUTINE AD_UnPackRotInitInputType( ReKiBuf, DbKiBuf, IntKiBuf, Outdata, ErrSt
         END DO
       END DO
   END IF
+    i1_l = LBOUND(OutData%NacellePosition,1)
+    i1_u = UBOUND(OutData%NacellePosition,1)
+    DO i1 = LBOUND(OutData%NacellePosition,1), UBOUND(OutData%NacellePosition,1)
+      OutData%NacellePosition(i1) = REAL(DbKiBuf(Db_Xferred), R8Ki)
+      Db_Xferred = Db_Xferred + 1
+    END DO
     i1_l = LBOUND(OutData%NacelleOrientation,1)
     i1_u = UBOUND(OutData%NacelleOrientation,1)
     i2_l = LBOUND(OutData%NacelleOrientation,2)
diff --git a/modules/openfast-library/src/FAST_Subs.f90 b/modules/openfast-library/src/FAST_Subs.f90
index 7a28e2cfc2..875d17a1e2 100644
--- a/modules/openfast-library/src/FAST_Subs.f90
+++ b/modules/openfast-library/src/FAST_Subs.f90
@@ -491,6 +491,7 @@ SUBROUTINE FAST_InitializeAll( t_initial, p_FAST, y_FAST, m_FAST, ED, BD, SrvD,
       
       Init%InData_AD%rotors(1)%HubPosition        = ED%y%HubPtMotion%Position(:,1)
       Init%InData_AD%rotors(1)%HubOrientation     = ED%y%HubPtMotion%RefOrientation(:,:,1)
+      Init%InData_AD%rotors(1)%NacellePosition    = ED%y%NacelleMotion%Position(:,1)
       Init%InData_AD%rotors(1)%NacelleOrientation = ED%y%NacelleMotion%RefOrientation(:,:,1)
       
       do k=1,NumBl