# Portbook Sea Ports — Harbours, berths and terminals > Harbours, berths and terminals (iPhone/iPad app by Danylo Budylkin.) - Source: https://appshunter.io/ios/app/portbook-sea-ports/id6797213460 (this page in markdown: same URL + `.md`) - Developer: [Danylo Budylkin](https://appshunter.io/developer/6778012130) - Category: Navigation, Reference - Price: Free - Age rating: 4+ - Requires: iOS 17.0 · 6 MB - Languages: American English - Released: 2026-08-07 - Data updated: 2026-08-09 - User reviews in markdown: https://appshunter.io/ios/app/portbook-sea-ports/id6797213460/reviews.md ## What is Portbook Sea Ports? A reference to the world's seaports that keeps working when the signal does not. Every one of the 3,804 ports in the NGA World Port Index is on the device — not cached, not synced, not waiting on a server. So are 9,024 ISPS terminals, a searchable index, and a vector chart of the whole world. WHAT IS IN A PORT RECORD 103 fields, straight from the World Port Index: • Channel, anchorage, cargo pier, oil and LNG terminal depths • Maximum vessel length, beam and draft, onshore and offshore • Harbour size, type and shelter afforded; tidal range • Entrance restrictions — tide, heavy swell, ice, overhead limits • Pilotage: compulsory, available, advisable, local assistance • Tugs, traffic separation, vessel traffic service, turning area • Cargo facilities: container, Ro-Ro, breakbulk, solid and liquid bulk, oil, LNG • Cranes and lifts by capacity; repairs, dry dock, marine railway • Supplies: fuel oil, diesel, potable water, provisions, deck and engine stores • Quarantine, first port of entry, medical, waste and ballast disposal • Chart numbers and the Sailing Directions volume that covers the port Fields the survey never recorded are hidden rather than shown as "no". A blank is not a zero, and the app never pretends otherwise. TERMINALS AND GISIS CODES 9,024 ISPS port facilities across 1,785 ports, each with the number it is registered under in IMO GISIS. Rotterdam alone lists 120. Search a berth by its name or by its code. "Waalhaven" finds Rotterdam. "NLRTM-0002" finds one specific terminal. "Steinweg" finds twelve, in four ports and three countries. A CHART THAT WORKS WITH NO NETWORK With a connection you get satellite imagery. Without one the app draws its own chart from vector data in the bundle: coastlines, borders, lakes, and the names of countries, cities, seas and straits — Bosporus, Bab el Mandeb, the Strait of Gibraltar, Drake Passage. It has a night palette that follows the system appearance: a near-black ground and dim ink, because a chart that glows costs the watchkeeper their night vision. All 3,804 ports sit on one map, clustered. Tap a cluster to drop into it. HARBOUR DETAIL, DOWNLOADED A 1:50m coastline is kilometres wide of the truth at berth scale. For any port you care about, download about 20 km of harbour detail from OpenStreetMap: quays, piers, breakwaters, dock basins and canals, drawn on the offline chart. Rotterdam is under a megabyte. Downloads refresh themselves roughly once a month over Wi-Fi. A failed refresh keeps the copy you already have — a chart from last month beats no chart at all. SEARCH AND FILTER Search by port name, alternate name, UN/LOCODE, country, region, terminal name or GISIS code. Filter by harbour size, minimum channel depth, pilotage, and ten kinds of terminal. Every port carries its full UN/LOCODE record from UNECE: the official spelling, the administrative subdivision, whether the location is also a rail, road or air terminal, and how firmly the code is established. PRIVACY No account. No tracking. No advertising. No analytics. Nothing is collected, because nothing needs to be. WHAT NEEDS A CONNECTION The port database, the world chart, downloaded harbour detail and your saved ports all work with no network whatsoever. Satellite imagery, downloading harbour detail, and opening a Sailing Directions PDF are the three things that need one. SOURCES • NGA World Port Index (Pub 150) — a US Government work in the public domain • UN/LOCODE, published by UNECE • Natural Earth — public domain • Harbour detail © OpenStreetMap contributors, ODbL • ISPS terminal list from IMO GISIS NOT FOR NAVIGATION This is a reference, not a navigational aid. It is not an electronic chart system and it does not replace official charts, Notices to Mariners, or the judgement of the master. Data quality varies: the World Port Index is a survey record, and some entries are decades old. ## Version history (last 1 release) ### 1.0 — 2026-08-07 No release notes. ## More apps by Danylo Budylkin - [Deckmint AI Presentation Maker](https://appshunter.io/ios/app/deckmint-ai-presentation-maker/id6778012128) - [Unstuck: ADHD Focus & Tasks](https://appshunter.io/ios/app/unstuck-adhd-focus-and-tasks/id6779562324) - [Fastix: Fasting Timer & Diet](https://appshunter.io/ios/app/fastix-fasting-timer-and-diet/id6780178790) All apps by Danylo Budylkin: https://appshunter.io/developer/6778012130 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-09.*