public virtual void UnregisterFromSystems(MyCubeBlock block)
        {
            // Note: ResourceDistributor, WeaponSystem and TemrminalSystem can be null on closing (they are not in the ship but in the logical group). That's why they are null-checked
            if (ResourceDistributor != null)
            {
                ProfilerShort.Begin("Unregister Power producer");
                var powerProducer = block.Components.Get <MyResourceSourceComponent>();
                if (powerProducer != null)
                {
                    ResourceDistributor.RemoveSource(powerProducer);
                }

                ProfilerShort.BeginNextBlock("Unregister Power consumer");
                var powerConsumer = block.Components.Get <MyResourceSinkComponent>();
                if (!(block is MyThrust) && powerConsumer != null)
                {
                    ResourceDistributor.RemoveSink(powerConsumer);
                }

                ProfilerShort.End();

                var socketOwner = block as IMyRechargeSocketOwner;
                if (socketOwner != null)
                {
                    socketOwner.RechargeSocket.ResourceDistributor = null;
                }
            }

            ProfilerShort.Begin("Unregister gun object");
            if (WeaponSystem != null)
            {
                var weapon = block as IMyGunObject <MyDeviceBase>;
                if (weapon != null)
                {
                    WeaponSystem.Unregister(weapon);
                }
            }

            ProfilerShort.BeginNextBlock("Unregister functional block");
            if (TerminalSystem != null)
            {
                var functionalBlock = block as MyTerminalBlock;
                if (functionalBlock != null)
                {
                    TerminalSystem.Remove(functionalBlock);
                }
            }

            // CH: We probably don't need to unregister controller blocks here. It's done in ShipController's OnUnregisteredFromGridSystems

            /*ProfilerShort.BeginNextBlock("Unregister controller block");
             * if (ControlSystem != null)
             * {
             *  var controllableBlock = block as MyShipController;
             *  if (controllableBlock != null && controllableBlock.ControllerInfo.Controller != null)
             *      ControlSystem.RemoveControllerBlock(controllableBlock);
             * }*/

            ProfilerShort.BeginNextBlock("Unregister inventory block");
            var inventoryBlock = (block != null && block.HasInventory) ? block : null;

            if (inventoryBlock != null && inventoryBlock.HasInventory)
            {
                ConveyorSystem.Remove(inventoryBlock);
            }

            ProfilerShort.BeginNextBlock("Unregister conveyor block");
            var conveyorBlock = block as IMyConveyorEndpointBlock;

            if (conveyorBlock != null)
            {
                ConveyorSystem.RemoveConveyorBlock(conveyorBlock);
            }

            ProfilerShort.BeginNextBlock("Unregister segment block");
            var segmentBlock = block as IMyConveyorSegmentBlock;

            if (segmentBlock != null)
            {
                ConveyorSystem.RemoveSegmentBlock(segmentBlock);
            }

            ProfilerShort.BeginNextBlock("Unregister Reflector light");
            var reflectorLight = block as MyReflectorLight;

            if (reflectorLight != null)
            {
                ReflectorLightSystem.Unregister(reflectorLight);
            }

            if (MyFakes.ENABLE_WHEEL_CONTROLS_IN_COCKPIT)
            {
                ProfilerShort.BeginNextBlock("Unregister wheel");
                var wheel = block as MyMotorSuspension;
                if (wheel != null)
                {
                    WheelSystem.Unregister(wheel);
                }
            }

            ProfilerShort.BeginNextBlock("Unregister landing gear");
            var gear = block as IMyLandingGear;

            if (gear != null)
            {
                LandingSystem.Unregister(gear);
            }

            ProfilerShort.BeginNextBlock("Unregister gyro");
            var gyro = block as MyGyro;

            if (gyro != null)
            {
                GyroSystem.Unregister(gyro);
            }

            ProfilerShort.BeginNextBlock("Unregister camera");
            var camera = block as MyCameraBlock;

            if (camera != null)
            {
                CameraSystem.Unregister(camera);
            }

            ProfilerShort.BeginNextBlock("block.OnUnregisteredFromGridSystems()");
            block.OnUnregisteredFromGridSystems();

            ProfilerShort.End();
        }