diff --git a/src/server/BreCal/database/sql_utils.py b/src/server/BreCal/database/sql_utils.py
index 7c9708d..cd2606d 100644
--- a/src/server/BreCal/database/sql_utils.py
+++ b/src/server/BreCal/database/sql_utils.py
@@ -1,6 +1,11 @@
-from BreCal.database.sql_handler import execute_sql_query_standalone
+import pydapper
 import datetime
 
+from BreCal import local_db
+from BreCal.schemas import model
+from BreCal.database.sql_queries import SQLQuery
+from BreCal.database.sql_handler import execute_sql_query_standalone
+
 def get_user_data_for_id(user_id:int, expiration_time:int=90):
     """debugging function, which is useful to pull user_data from the database, which may be used to create stub data and unit tests"""
     query = "SELECT * FROM user where id = ?id?"
@@ -33,4 +38,96 @@ def get_port_ids_for_participant_id(participant_id:int):
     """helper function to load all port ids for a participant"""
     query = "SELECT port_id FROM participant_port_map where participant_id = ?participant_id?"
     pdata = execute_sql_query_standalone(query=query, param={"participant_id":participant_id})
-    return pdata
\ No newline at end of file
+    return pdata
+
+def filter_berths_by_port(berths:list[model.Berth], participant:model.Participant)->list[model.Berth]:
+    """
+    this function filters a list of berths by the participant's assigned ports.
+
+    Uses:
+        berth.port_id (the port's int id of each berth)
+        Participant.ports (a list of int ids)
+    
+    returns: berths (filtered)
+    """
+    berths = [berth for berth in berths if berth.port_id in participant.ports]
+    return berths
+
+
+def filter_berths_by_users_assigned_ports(berths:list[model.Berth], user_data:dict, commands=None)->list[model.Berth]:
+    """
+    this function uses the user_id to filter a list of berths. Only those berths, which belong to the Participant's assigned
+    port list are relevant.
+
+    Uses:
+        berth.port_id (the port's int id of each berth)
+
+        user_data 'id' to obtain Participant
+        Participant.ports (a list of int ids)
+    
+    returns: berths
+    """
+    assert 'id' in list(user_data.keys())
+
+    if commands is None:
+        pooledConnection = local_db.getPoolConnection()
+        commands = pydapper.using(pooledConnection)
+
+    # filter: return only the relevant berths to a user, which belong to his assigned ports
+    user_participant_query = SQLQuery.get_participant_by_user_id()
+
+    # use the user's id to obtain the matching participant
+    sentinel = object()
+    participant = commands.query_single_or_default(
+        user_participant_query, default=sentinel, model=model.Participant, 
+        param={"userid":user_data.get("id")})
+    if participant is sentinel:
+        raise Exception(f"could not find a user with id {user_data.get('id')}")
+    berths = filter_berths_by_port(berths, participant)
+    return berths
+
+
+def filter_shipcalls_by_port(shipcalls:list[model.Shipcall], participant:model.Participant)->list[model.Shipcall]:
+    """
+    this function filters a list of shipcalls by the participant's assigned ports.
+
+    Uses:
+        shipcall.port_id (the port's int id of each shipcall)
+        Participant.ports (a list of int ids)
+    
+    returns: shipcalls (filtered)
+    """
+    shipcalls = [shipcall for shipcall in shipcalls if shipcall.port_id in participant.ports]
+    return shipcalls
+
+def filter_shipcalls_by_users_assigned_ports(shipcalls:list[model.Shipcall], user_data:dict, commands=None)->list[model.Shipcall]:
+    """
+    this function uses the user_id to filter a list of shipcalls. Only those shipcalls, which belong to the Participant's assigned
+    port list are relevant.
+
+    Uses:
+        shipcall.port_id (the port's int id of each shipcall)
+
+        user_data 'id' to obtain Participant
+        Participant.ports (a list of int ids)
+    
+    returns: shipcalls
+    """
+    assert 'id' in list(user_data.keys())
+
+    if commands is None:
+        pooledConnection = local_db.getPoolConnection()
+        commands = pydapper.using(pooledConnection)
+
+    # filter: return only the relevant shipcalls to a user, which belong to his assigned ports
+    user_participant_query = SQLQuery.get_participant_by_user_id()
+
+    # use the user's id to obtain the matching participant
+    sentinel = object()
+    participant = commands.query_single_or_default(
+        user_participant_query, default=sentinel, model=model.Participant, 
+        param={"userid":user_data.get("id")})
+    if participant is sentinel:
+        raise Exception(f"could not find a user with id {user_data.get('id')}")
+    shipcalls = filter_shipcalls_by_port(shipcalls, participant)
+    return shipcalls
diff --git a/src/server/BreCal/impl/berths.py b/src/server/BreCal/impl/berths.py
index f00a9e8..0920d71 100644
--- a/src/server/BreCal/impl/berths.py
+++ b/src/server/BreCal/impl/berths.py
@@ -4,6 +4,7 @@ import pydapper
 
 from ..schemas import model
 from .. import local_db
+from BreCal.database.sql_utils import filter_berths_by_users_assigned_ports
 
 def GetBerths(options):
     """
diff --git a/src/server/BreCal/impl/shipcalls.py b/src/server/BreCal/impl/shipcalls.py
index 087a552..1891ddd 100644
--- a/src/server/BreCal/impl/shipcalls.py
+++ b/src/server/BreCal/impl/shipcalls.py
@@ -8,11 +8,12 @@ from .. import local_db
 from ..services.auth_guard import check_jwt
 
 from BreCal.database.update_database import evaluate_shipcall_state
+from BreCal.database.sql_utils import filter_shipcalls_by_users_assigned_ports
 from BreCal.database.sql_queries import create_sql_query_shipcall_get, create_sql_query_shipcall_post, create_sql_query_shipcall_put, create_sql_query_history_post, create_sql_query_history_put, SQLQuery
 from marshmallow import Schema, fields, ValidationError
 from BreCal.validators.validation_error import create_validation_error_response
 
-def GetShipcalls(options):
+def GetShipcalls(user_data, options):
     """
     No parameters, gets all entries
     """
@@ -24,8 +25,12 @@ def GetShipcalls(options):
         # query = SQLQuery.get_shipcalls(options)
         query = create_sql_query_shipcall_get(options)
 
-        data = commands.query(query, model=model.Shipcall.from_query_row, buffered=True)
-        for shipcall in data:
+        shipcalls = commands.query(query, model=model.Shipcall.from_query_row, buffered=True)
+
+        # filter: return only the relevant shipcalls to a user, which belong to his assigned ports
+        shipcalls = filter_shipcalls_by_users_assigned_ports(shipcalls, user_data, commands=commands)
+
+        for shipcall in shipcalls:
             # participant_query = SQLQuery.get_participants()
             # participants = commands.query(participant_query, model=dict, param={"shipcall_id" : shipcall.id}, buffered=False)
             # for record in participants:
@@ -35,7 +40,7 @@ def GetShipcalls(options):
                 pa = model.Participant_Assignment(record["participant_id"], record["type"])
                 shipcall.participants.append(pa)
 
-        return json.dumps(data, default=model.obj_dict), 200, {'Content-Type': 'application/json; charset=utf-8'}
+        return json.dumps(shipcalls, default=model.obj_dict), 200, {'Content-Type': 'application/json; charset=utf-8'}
 
     except Exception as ex:
         logging.error(traceback.format_exc())
@@ -141,7 +146,7 @@ def PostShipcalls(schemaModel):
                 commands.execute(pquery, param={"shipcall_id" : new_id, "participant_id" : participant_assignment["participant_id"], "type" : participant_assignment["type"]})
 
         # apply 'Traffic Light' evaluation to obtain 'GREEN', 'YELLOW' or 'RED' evaluation state. The function internally updates the mysql database
-        # evaluate_shipcall_state(mysql_connector_instance=pooledConnection, shipcall_id=new_id) # new_id (last insert id) refers to the shipcall id
+        evaluate_shipcall_state(mysql_connector_instance=pooledConnection, shipcall_id=new_id) # new_id (last insert id) refers to the shipcall id
 
         # save history data
         # TODO: set ETA properly
@@ -255,6 +260,9 @@ def PutShipcalls(schemaModel):
                 dquery = "DELETE FROM shipcall_participant_map WHERE id = ?existing_id?"
                 commands.execute(dquery, param={"existing_id" : elem["id"]})
 
+        # re-evaluate the shipcall
+        evaluate_shipcall_state(mysql_connector_instance=pooledConnection, shipcall_id=schemaModel["id"])
+
         # save history data
         # TODO: set ETA properly
         # query = SQLQuery.create_sql_query_history_put()
diff --git a/src/server/BreCal/stubs/shipcall.py b/src/server/BreCal/stubs/shipcall.py
index 78aee75..3b4ea4e 100644
--- a/src/server/BreCal/stubs/shipcall.py
+++ b/src/server/BreCal/stubs/shipcall.py
@@ -14,6 +14,7 @@ def get_shipcall_simple():
 
     shipcall_id = 124 # generate_uuid1_int()
     ship_id = 5 # generate_uuid1_int()
+    port_id = 12
 
     eta = base_time+datetime.timedelta(hours=3, minutes=12)
     role_type = 1
@@ -84,6 +85,7 @@ def get_shipcall_simple():
         evaluation_time,
         evaluation_notifications_sent,
         time_ref_point,
+        port_id,
         created,
         modified,
         participants,