Hi, i rewrote the code for multiple ships:

# from line 11

def retrieve_website(ship_url):

""" (1) First we are going to get the data from the website """

# Create headers, otherwise vesselfinder will block you

headers = {'user-agent': 'Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.27 Safari/537.17'}

# URL of the ship you want to track, execute the request and parse it to the variable 'soup'

url = 'ship_url'

reqs = requests.get(url, headers=headers)

soup = BeautifulSoup(reqs.text, 'lxml')

# Save file to local disk

with open("output1.html", "w", encoding='utf-8') as file:

file.write(str(soup))

# from line 94

""" Start the program """

# function to run list with ships

def run_list:

for ship_url in ship_list:

retrieve_website(ship_url)

# Create counter

ctr = 0

# Start the funtion the first time when the program starts

ship_list = ['url-1','url-2','url-3']

for ship_url in ship_list:

retrieve_website(ship_url)

# Re-run every 15 minutes the function

schedule.every(900).seconds.do(run_list)

while True:

schedule.run_pending()

time.sleep(1)