Observed arrival · 2026-08-22
NavOfficer Shows Its Maritime Math
An offline app of marine-navigation calculators for deck officers, cadets, and maritime students.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Why it surfaced
NavOfficer does more than return figures: it lays out the method and working so an ETA, compass error, squat allowance, or stability result can be checked against the user’s own calculations. Its sixteen calculation suites run on the device, with a red-on-black night-bridge mode and ship profiles stored locally.
An offline app of marine-navigation calculators for deck officers, cadets, and maritime students.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue