Obtention d'un visa "On Arrival" au port de Medan (Indonésie)

Bonjour,
Savez vous s'il est possible d'obtenir un visa "on arrival" lorsqu'on débarque au port de Medan en venant de Penang (Malaisie)? Ou si ces visas ne sont délivrés qu'aux aeroport? De plus, où peut on étendre ce visa sur Sumatra?
Merci pour votre aide!

List of Airports and Seaports that have facilities to issue VISA ON ARRIVAL
A. Airports
1. Sultan Iskandar Muda (in Banda Aceh, Nanggroe Aceh Darussalam)
2. Polonia (in Medan, North Sumatera)
3. Sultan Syarif Kasim II (in Pekanbaru, Riau)
4. Hang Nadim (in Batam, Riau Archipelago)
5. Minangkabau (in Padang, West Sumatera)
6. Sultan Mahmud Badaruddin II (in Palembang, South Sumatera)
7. Soekarno-Hatta (in the Special Region of the Capital City of Jakarta)
8. Halim Perdana Kusuma (in the Special Region of the Capital City of Jakarta)
9. Husein Sastranegara (in Bandung, West Java)
10. Adi Sucipto (in Yogyakarta, Special Territory of Yogyakarta)
11. Ahmad Yani (in Semarang, Central Java)
12. Adi Sumarmo (in Surakarta (Solo), Central Java)
13. Ir. Juanda (in Surabaya, East Java)
14. Supadio (in Pontianak, West Kalimantan (Borneo))
15. Sepinggan (in Balikpapan, East Kalimantan (Borneo))
16. Sam Ratulangi (in Manado, North Sulawesi (Celebes))
17. Hasanuddin (in Makassar, South Sulawesi (Celebes))
18. Ngurah Rai (in Denpasar, Bali)
19. Lombok (in Mataram, West Nusa Tenggara)
20. El Tari (in Kupang, East Nusa Tenggara)B. Seaports
1. Sekupang (in Batam, Riau Archipelago)
2. Citra Tritunas (Harbor Bay) (in Batam, Riau Archipelago)
3. Nongsa (in Batam, Riau Archipelago)
4. Marina Teluk Senimba (in Batam, Riau Archipelago)
5. Batam Centre (in Batam, Riau Archipelago)
6. Bandar Bintan Telani Lagoi (in Tanjung Uban, Riau Archipelago)
7. Bandar Sri Udana Lobam (in Tanjung Uban, Riau Archipelago)
8. Sri Bintan Pura (in Tanjung Pinang, Riau Archipelago)
9. Tanjung Balai Karimun (in Tanjung Balai Karimun, Riau Archipelago)
10. Belawan (in Belawan, North Sumatera)
11. Sibolga (in Sibolga, North Sumatera)
12. Yos Sudarso (in Dumai, Riau)
13. Teluk Bayur (in Padang, West Sumatera)
14. Tanjung Priok (in the Special Region of the Capital City of Jakarta)
15. Tanjung Mas (in Semarang, Central Java)
16. Padang Bai (in Karangasem, Bali)
17. Benoa (in Badung, Bali)
18. Bitung (in Bitung, North Sulawesi)
19. Soekarno-Hatta (in Makassar, South Sulawesi)
20. Pare-Pare (in Pare-Pare, South Sulawesi)
21. Maumere (in Maumere, East Nusa Tenggara)
22. Tenau (in Kupang, East Nusa Tenggara)
23. Jayapura (in Jayapura, Papua)C. Other Entry
1. Etikong (in Etikong, West Kalimantan (Borneo))