How can I have the turret on top of the parent ship be similar transforms?

Hello Unity community, I'm having a little issue with the child turret on my ship shown below.

The turret's rotation isn't relative to the parent ship. It aims at the target but it becomes offset from its rotation. I'm pretty new to Unity and learning CSharp so I really don't know what I could really do here at the moment. Here is my TurretController script if anyone was wondering. Any help would be appreciated.

 using UnityEngine;
 using System.Collections;
 
 public class DestroyerTurretController : MonoBehaviour {
     public Transform target;
     private bool TurretSeek;
     GameObject prefab;
     public Transform projectilespawn;
     public float fireRate = 0.5f;
     private float nextFire = 0.0f;
 
 
     void Start () {
         prefab = Resources.Load("projectile") as GameObject;
     
     }
     
     
     void Update () {
 
         if (TurretSeek == true & Time.time > nextFire)
         {
             transform.LookAt(target);
             GameObject projectile = Instantiate(prefab) as GameObject;
             projectile.transform.position = transform.position + projectilespawn.transform.forward * 2.3f;
             Rigidbody rb = projectile.GetComponent<Rigidbody>();
             rb.velocity = projectilespawn.transform.forward * 100;
             rb.rotation = projectilespawn.rotation;
             nextFire = Time.time + fireRate;
         }
 
     }
     void OnTriggerEnter(Collider other)
     {
         TurretSeek = true;
     }
 }