# Seafarer Job Wizard — 13 offline bridge calculators

> 13 offline bridge calculators (iPhone/iPad app by JIWON SEO.)

- Source: https://appshunter.io/ios/app/seafarer-job-wizard/id6794601860 (this page in markdown: same URL + `.md`)
- Developer: [JIWON SEO](https://appshunter.io/developer/6794601862)
- Category: Navigation, Utilities
- Price: Free with in-app purchases
- Age rating: 17+
- Requires: iOS 15.5 · 117 MB
- Languages: American English, Korean
- Released: 2026-08-17
- Data updated: 2026-08-22
- User reviews in markdown: https://appshunter.io/ios/app/seafarer-job-wizard/id6794601860/reviews.md

## What is Seafarer Job Wizard?

The calculations a watchkeeping officer actually runs, in one app. Everything is computed on the device, so it keeps working in the middle of an ocean with no link.

NAVIGATION CALCULATORS — 13
· Squat & UKC — table method plus height of tide. Load your own company squat table from CSV.
· Gyro Error (Sun, stars, planets) — true bearing vs gyro bearing, with a polar star finder over the 57 navigational stars plus Polaris.
· Deviation / Variation — the CDMVT chain, with the WMM2025 magnetic model built in.
· Amplitude and Rise & Set
· Sun Sighting (LOP) — sextant altitude to Ho/Hc to intercept and line of position, with running fix.
· Great Circle Sailing — distance, initial course, vertex and latitude at a given longitude.
· True Wind, ETA, Bunker Calculation
· Tank Calibration (Sounding) — interpolates your calibration table and refuses to extrapolate beyond it.
· Watchkeeping Tools — round timer plus a night navigation-light identification quick reference.
· Anchor Holding Power — Pro Pack
Drag the list into the order you work in, and reset it any time.

FILL IN FROM A PHOTO — ON-DEVICE TEXT RECOGNITION
Read ship's particulars, deviation cards, sounding tables and observation logs from the camera or your photo library straight into the input fields. Recognition runs entirely on the device and the images are never transmitted.

SEAMEN'S CLUB DIRECTORY — OFFLINE
541 clubs across 391 ports in 71 countries. Search services, shuttles and phone numbers with no connection and dial straight from the entry. Favourites, notes and your own added entries stay on the device.

SHIP PROFILES
Keep particulars, tank calibration tables, deviation cards and your custom squat grid per vessel and recall them on demand.

LOGBOOK
Squat & UKC calculation history and the gyro observation worksheet are saved on the device and export as text.

COMMUNITY — OPTIONAL
A document market and board for exchanging material with other officers. Browse and take part without signing in.

PRO PACK — ONE-TIME
Unlocks the Anchor Holding Power calculator and the offline translator. Not a subscription; once unlocked it keeps working offline.

30 languages.

Note — this is a navigation aid for reference only. Verify every result against official nautical publications, ENC/charts and your company's procedures before use. Navigational decisions remain the navigator's responsibility.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 3,000 Points | $19.99 | one-time |
| 1,200 Points | $9.99 | one-time |
| 500 Points | $3.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-08-17

No release notes.

## More apps by JIWON SEO

- [MSI MAP](https://appshunter.io/ios/app/msi-map/id6794602967)

All apps by JIWON SEO: https://appshunter.io/developer/6794601862

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*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 2026-08-22.*