diff --git a/Palette/env/engine.py b/Palette/env/engine.py
index eb3bb8b..f10ad8e 100644
--- a/Palette/env/engine.py
+++ b/Palette/env/engine.py
@@ -355,7 +355,6 @@ class SeaEnvEngine(object):
 
             self.ship_body[ship_id].angle = process_angle(
                 self.ship_body[ship_id].angle)
-            # calculate velocity with direction
             driving_direction = Vec2d(1, 0).rotated(
                 self.ship_body[ship_id].angle)