diff --git a/src/boat.py b/src/boat.py
index 3604ff7..d112145 100644
--- a/src/boat.py
+++ b/src/boat.py
@@ -1,7 +1,7 @@
-#! encode: utf8
+#coding:utf-8
 
 class Boat:
-    def __init__(self, boat_id, name, sismer_id, url, avatar, temperatures, positions):
+    def __init__(self, boat_id: str, name: str, sismer_id: str, url: str, avatar:str , temperatures: list, positions: list):
         self.boat_id = boat_id
         self.name = name
         self.sismer_id = sismer_id
@@ -10,16 +10,18 @@ class Boat:
         self.temperatures = temperatures
         self.positions = positions
     def __str__(self):
-        return f"[{self.name}({self.boat_id})]\nSISMER ID: {self.sismer_id}\nURL: {self.url}\nAvatar: {self.avatar}"
+        return f"{self.name}"
 
     def get_max_temp(self):
         return max(self.temperatures)
-    def get_nothiet_coords(self):
-        if len(self.positions == 0):
+    def get_northiest_coords(self):
+        if len(self.positions) == 0:
             raise Exception(f"{self.name} must have coords to compare")
-        best = slef.positions[0]
+        best = self.positions[0]
         for position in self.positions:
             if position.is_northiest_than(best):
                 best = position
         return best
                 
+    def print_details(self):
+        print(f"[{self.name}({self.boat_id})]\nSISMER ID: {self.sismer_id}\nURL: {self.url}\nAvatar: {self.avatar}")
diff --git a/src/main.py b/src/main.py
index 5694fd2..c055831 100644
--- a/src/main.py
+++ b/src/main.py
@@ -1,14 +1,16 @@
 #! encoding: utf-8
 
-from rest_api_boats_loader import RestApiBoatsLoader
 from sys import argv
+import fleet
+from rest_api_boats_loader import RestApiBoatsLoader
 
 if len(argv) <= 1:
     raise Exception("You must give the year you want to get")
 year = int(argv[1])
 
-boats_loader = RestApiBoatsLoader()
-
-for boat in boats_loader.load_boats(year):
-    print(boat)
+my_fleet = fleet.Fleet(year, RestApiBoatsLoader())
+for boat in my_fleet.boats:
+    boat.print_details()
     print()
+northiest_boat, northiest_coords = my_fleet.get_northiest()
+print(f"The boat which has gone northiest is the {northiest_boat}. It went in {northiest_coords}")
diff --git a/src/position.py b/src/position.py
index 4e91e2d..112bdcf 100644
--- a/src/position.py
+++ b/src/position.py
@@ -1,11 +1,13 @@
-#! encoding: utf8
+#coding:utf-8
 
 class Position:
-    def __init__(self, latitude, longitude):
+    def __init__(self, latitude: float, longitude: float):
         self.latitude = latitude
         self.longitude = longitude
 
     def __str__(self):
         return f"[{self.latitude}; {self.latitude}]"
     def is_northiest_than(self, position):
+        if position == None:
+            return True
         return self.latitude >= position.latitude
diff --git a/src/rest_api_boats_loader.py b/src/rest_api_boats_loader.py
index 139517e..fec0e6a 100644
--- a/src/rest_api_boats_loader.py
+++ b/src/rest_api_boats_loader.py
@@ -1,17 +1,18 @@
-#! encode: utf8
+#coding:utf-8
 
 from boat import Boat
 from position import Position
-from data_loader import DataLoader
+from boats_loader import BoatsLoader
+import requests
 
-class RestApiBoatsLoader(DataLoader): 
+class RestApiBoatsLoader(BoatsLoader): 
     def __init__(self):
         self.url = 'https://localisation.flotteoceanographique.fr/api/v2/vessels'
         self.search_begin = '-01-01T00:00:00.000Z'
         self.search_end = '-12-31T23:59:59.000Z'
 
 
-    def load_boats(self, year):
+    def load_boats(self, year: int):
         raw_data = self.load_from_url(self.url)
         boats = []
         for boat in raw_data.json():
@@ -19,7 +20,7 @@ class RestApiBoatsLoader(DataLoader):
             tmp_boat = Boat(boat['id'], boat['name'], boat['sismerId'], boat['url'], boat['avatar'], boat_data['temp'], boat_data['pos'])
             boats.append(tmp_boat)
         return boats
-    def _load_boat_data(self, boat_id, year):
+    def _load_boat_data(self, boat_id: str, year: int):
         json_data = self.load_from_url(self.url + f"/{boat_id}/positions?startDate={year}{self.search_begin}&endDate={year}{self.search_end}").json()
         data = {}
         data['pos'] = []
@@ -32,4 +33,9 @@ class RestApiBoatsLoader(DataLoader):
             if 'airtemp' in single_data['data']:
                 data['temp'].append(single_data['data']['airtemp'])
         return data
-
+    
+    def load_from_url(self, url: str):
+        data = requests.get(url)
+        if(data.status_code != 200):
+            raise Exception(f"Error {data.status_code}")
+        return data