AbstrakDalam rangka meningkatkan pelayanan terhadap kapal dan barang di pelabuhan, pemerintah mengeluarkan berbagai regulasi agar lebih efisien dan menarik investasi sehingga kegiatan ekonomi Indonesia terus meningkat. Salah satu regulasi yang dikeluarkan adalah kebijakan Pelayanan Terpadu Satu Pintu (PTSP) secara elektronik atau dikenal dengan nama Indonesia National Single Window (INSW). Inaportnet merupakan salah satu bagian dari implementasi program INSW yang merupakan sistem elektronik dalam pelayanan pengurusan dokumen kepelabuhanan (bongkar muat) dan dokumen kapal. Inaportnet sebagai portal yang dioperasikan dan diintegrasikan ke seluruh pola kegiatan pelayanan terhadap kapal dan barang ternyata masih belum memberikan pelayanan secara cepat, misalnya masih sering terjadi gangguan perencanaan kapal sandar, pemanduan, dan bongkar muat. Oleh karena itu, penulis melakukan penelitian dengan menggunakan metode gap analysis dengan melihat beberapa aspek seperti teknis operasional, legalitas, dan kelembagaan. Penelitian dilakukan di Pelabuhan Tajung Perak melalui wawancara dan pengedaran kuesioner untuk mengetahui penilaian responden yang sebagian besar adalah para pengusaha pelayaran. Hasil penelitian menyatakan bahwa meskipun telah banyak yang merasa nyaman dengan sistem inaportnet, tetapi masih ditemukan beberapa hal yang perlu peningkatan atau perbaikan agar meningkatkan kepuasan para pengguna jasa kepelabuhanan antara lain pelayanan labuh, pandu, tunda, dan tambat (PPKB-D), pelayanan Daftar Urutan Bongkar (DUB), rencana kegiatan muat dan penerbitan Kartu Stack Ekspor (KSE), pengurusan dokumen Persetujuan Ekspor (PE), dan perizinan karantina.Kata kunci: Pelayanan terpadu satu pintu, Inaportnet.AbstractInaportnet Implementation in One Door Integrated Services at Tanjung Perak Harbor in Surabaya: In order to improve services for ships and goods in ports, the government issued various regulations to make it more efficient and attract investment so that Indonesia's economic activities continue to increase. One of the regulations issued is One Stop Integrated Services (PTSP) policy electronically known as the Indonesia National Single Window (INSW). Inaportnet is one part of the implementation of INSW program which is an electronic system in the management of port documents (loading and unloading) and ship documents. Inaportnet as a portal that is operated and integrated into all patterns of service activities for ships and goods, apparently still does not provide services quickly, for example there are still frequent interruptions in berth ship planning, scouting, loading and unloading. Therefore, the authors conducted a study using the gap analysis method by looking at several aspects such as operational technicalities, legality, and institutions. The study was conducted at the Port of Tajung Perak through interviews and questionnaires to determine the assessment of respondents who were mostly shipping entrepreneurs. The results of the study stated that although there were many who felt comfortable with the Inaportnet system, there were still some things that needed to be improved in order to be more satisfying for port service users, including landing, scouting, delaying and mooring services (PPKB-D), list services order of unloading (DUB), planned loading and issuance of export stack cards (KSE), processing of export approval documents (PE), and quarantine license.Keywords:  One Stop Integrated Services, Inaportnet.