diff --git a/common/src/main/scala/net/psforever/packet/game/OxygenStateMessage.scala b/common/src/main/scala/net/psforever/packet/game/OxygenStateMessage.scala
index 16ed7b87..54da0ab0 100644
--- a/common/src/main/scala/net/psforever/packet/game/OxygenStateMessage.scala
+++ b/common/src/main/scala/net/psforever/packet/game/OxygenStateMessage.scala
@@ -9,15 +9,16 @@ import shapeless.{::, HNil}
 
 /**
   * Alert the condition of a vehicle the player is using when going too far underwater.
-  * The player must be mounted to this vehicle at start time for this countdown to display.
+  * The player must be mounted in/on this vehicle at start time for this countdown to display.
   * @param vehicle_guid the player's mounted vehicle
-  * @param time the countdown's time, in seconds
+  * @param progress the remaining countdown;
+  *                 for vehicle waterlog condition, the progress per second rate is very high
   * @param active show a new countdown if `true` (resets any active countdown);
   *               clear any active countdowns if `false`;
   *               defaults to `true`
   */
 final case class WaterloggedVehicleState(vehicle_guid : PlanetSideGUID,
-                                         time : Float,
+                                         progress : Float,
                                          active : Boolean = true)
 
 /**
@@ -32,22 +33,23 @@ final case class WaterloggedVehicleState(vehicle_guid : PlanetSideGUID,
   * When it reaches zero, the vehicle will become disabled.
   * All players in the vehicle's seats will be kicked and they will not be allowed back in.<br>
   * <br>
-  * Normally, the countdowns should be set to begin at 100.0s.
+  * Normally, the countdowns should be set to begin at 100 (100.0).
   * This is the earliest the drowning GUI will appear for either blue or red indicators.
-  * Passing greater intervals - up to 204.8s - will start the countdown silently but the GUI will be hidden until 100.0s.
-  * (The progress indicators will actually appear to start counting from 98%.)
-  * Managing the secondary vehicle countdown independent of the primary player countdown requires updating with the correct times.
+  * Passing greater intervals - up to 204.8 - will start the countdown silently but the GUI will be hidden until 100.0.
+  * (The progress indicators will actually appear to start counting from 98.)
+  * Managing the secondary vehicle countdown independent of the primary player countdown requires updating with the correct levels.
   * The countdown can be cancelled by instructing it to be `active = false`.<br>
   * <br>
   * Except for updating the indicators, all other functionality of "drowning" is automated by the server.
   * @param player_guid the player
-  * @param time the countdown's time, in seconds
+  * @param progress the remaining countdown;
+  *                 for character oxygen, the progress per second rate is about 1
   * @param active show a new countdown if `true` (resets any active countdown);
   *               clear any active countdowns if `false`
   * @param vehicle_state optional state of the vehicle the player is driving
   */
 final case class OxygenStateMessage(player_guid : PlanetSideGUID,
-                                    time : Float,
+                                    progress : Float,
                                     active : Boolean,
                                     vehicle_state : Option[WaterloggedVehicleState] = None)
   extends PlanetSideGamePacket {
@@ -60,13 +62,13 @@ object OxygenStateMessage extends Marshallable[OxygenStateMessage] {
   /**
     * Overloaded constructor that removes the optional state of the `WaterloggedVehicleState` parameter.
     * @param player_guid the player
-    * @param time the countdown's time upon start
+    * @param progress the remaining countdown
     * @param active show or clear the countdown
     * @param vehicle_state state of the vehicle the player is driving
     * @return
     */
-  def apply(player_guid : PlanetSideGUID, time : Float, active : Boolean, vehicle_state : WaterloggedVehicleState) : OxygenStateMessage =
-    OxygenStateMessage(player_guid, time, active, Some(vehicle_state))
+  def apply(player_guid : PlanetSideGUID, progress : Float, active : Boolean, vehicle_state : WaterloggedVehicleState) : OxygenStateMessage =
+    OxygenStateMessage(player_guid, progress, active, Some(vehicle_state))
 
   /**
     * A simple pattern that expands the datatypes of the packet's basic `Codec`.
diff --git a/common/src/test/scala/game/OxygenStateMessageTest.scala b/common/src/test/scala/game/OxygenStateMessageTest.scala
index 65830e55..034be18e 100644
--- a/common/src/test/scala/game/OxygenStateMessageTest.scala
+++ b/common/src/test/scala/game/OxygenStateMessageTest.scala
@@ -12,9 +12,9 @@ class OxygenStateMessageTest extends Specification {
 
   "decode (self)" in {
     PacketCoding.DecodePacket(string_self).require match {
-      case OxygenStateMessage(guid, time, active, veh_state) =>
+      case OxygenStateMessage(guid, progress, active, veh_state) =>
         guid mustEqual PlanetSideGUID(75)
-        time mustEqual 50.0
+        progress mustEqual 50.0
         active mustEqual true
         veh_state.isDefined mustEqual false
       case _ =>
@@ -24,13 +24,13 @@ class OxygenStateMessageTest extends Specification {
 
   "decode (vehicle)" in {
     PacketCoding.DecodePacket(string_vehicle).require match {
-      case OxygenStateMessage(guid, time, active, veh_state) =>
+      case OxygenStateMessage(guid, progress, active, veh_state) =>
         guid mustEqual PlanetSideGUID(75)
-        time mustEqual 50.0f
+        progress mustEqual 50.0f
         active mustEqual true
         veh_state.isDefined mustEqual true
         veh_state.get.vehicle_guid mustEqual PlanetSideGUID(1546)
-        veh_state.get.time mustEqual 50.0f
+        veh_state.get.progress mustEqual 50.0f
         veh_state.get.active mustEqual true
       case _ =>
         ko