BoxCollider2D rotation not the same as GameObject rotation

Hi all,
I'm having a bit of an issue with a BoxCollider2D I have on my GameObject. When I rotate the GameObject, the BoxCollider2D rotates with it, but not as fast. Is there a way to get the BoxCollider2D to move at the same rate as the GameObject? I feel like I'm missing something obvious.

Before rotation:

After rotation:

Below is my code for the movement of the player:

 using UnityEngine;
 using System.Collections;
 
 public class PlayerMovement : MonoBehaviour {
 
     Animator anim;
     Rigidbody2D rbody;
     float speed = 0f;
     public float moveSpeed = 0.6f;
     public float acceleration = 0.2f;
     public int turnSpeed = 20;
     bool sails = false;
 
     // Use this for initialization
     void Start () {
     
         anim = GetComponentInChildren<Animator> ();
         rbody = GetComponent<Rigidbody2D> ();
     }
 
     // Update is called once per frame
     void Update () {
 
         if (sails) {
             rbody.transform.Translate (transform.right * (speed * Time.deltaTime));
             speed += acceleration * Time.deltaTime;
 
             if (speed > moveSpeed)
                 speed = moveSpeed;
 
             if (Input.GetKey (KeyCode.LeftArrow)) {
                 rbody.transform.Rotate (0,0,turnSpeed * Time.deltaTime);
             }
 
             if (Input.GetKey (KeyCode.RightArrow)) {
                 rbody.transform.Rotate (0,0,-turnSpeed * Time.deltaTime);
             }
         }
 
         if (!sails) {
 
             rbody.transform.Translate (transform.right * (speed * Time.deltaTime));
             speed += -acceleration * Time.deltaTime;
 
             if (speed < 0f)
                 speed = 0f;
         }
 
         if (Input.GetKeyDown (KeyCode.Space)) {
             sails = !sails;
             anim.SetBool ("sailsDown", sails);
         }
     }
 }