diff --git a/moorpy/MoorProps_default.yaml b/moorpy/MoorProps_default.yaml
index dfa6a76..e0796ca 100644
--- a/moorpy/MoorProps_default.yaml
+++ b/moorpy/MoorProps_default.yaml
@@ -73,7 +73,12 @@ lineProps:
     Cd_ax     :   0.741    # axial drag coefficient based on DNV-OS-E301 adjusted for use with volumetric diameter
     Ca        :  1.0       # added mass coefficient based on Bureau Veritas 493-NR_2021-07
     Ca_ax     :  0.5       # axial added mass coefficient based on Bureau Veritas 493-NR_2021-07      
-            
+
+  wire :  # wire rope
+    mass_d2   :  5293    # linear mass density per diameter^2 [kg/m/m^2]    
+    dvol_dnom :  1.18     # volume-equivalent diameter per nominal diameter [-] (assumes 4,875.5 kg/m^3 material density)
+    MBL_d2    :  1022e6    # minimum breaking load per diameter^2 [N/m^2] 
+    EA_d2     :  97.1e9    # stiffness per diameter^2 [N/m^2]    
 
   polyester   :     # polyester synthetic rope
     mass_d2   :  679       # linear mass density per diameter^2 [kg/m/m^2]       
diff --git a/moorpy/system.py b/moorpy/system.py
index ed3b04b..7fb4a00 100644
--- a/moorpy/system.py
+++ b/moorpy/system.py
@@ -887,9 +887,10 @@ def parseYAML(self, data):
         for d in data['line_types']:
             name = d['name']
             dia = float(d['diameter']    )
-            w   = float(d['mass_density'])*self.g
+            m = float(d['mass_density'])
+            w = (m - np.pi/4*dia**2 *self.rho)*self.g
             EA  = float(d['stiffness']   )
-            self.lineTypes[name] = dict(name=name, d_vol=dia, w=w, EA=EA)
+            self.lineTypes[name] = dict(name=name, d_vol=dia, m=m, w=w, EA=EA)
             
             addToDict(d, self.lineTypes[name], 'breaking_load'        , 'MBL' , default=0)
             addToDict(d, self.lineTypes[name], 'cost'                 , 'cost', default=0)