Boater 103: Celestial as a Backup to GPS

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Providers 1

Upcoming dates see below

From $595

WHAT IS THIS COURSE?

Course Overview

Boater 103 teaches celestial navigation as GPS backup using stars, sun, and moon for long-distance cruising.

Prerequisites

Boater 101-102 knowledge
Basic maths
Navigation interest

What You'll Learn

Celestial principles
Sight reduction
Sextant use
Altitude corrections
Position fixing
Navigation tables

COURSE AT A GLANCE

Key Facts

Duration

15-20 hours

Typical Cost

$595

Issuing Body

Maritime Institute

Certificate

Boater 103 Certificate

UPCOMING DATES

Available Course Dates

Date	School	Location	Price
6 Jul 2026 to 11 Jul 2026	Maritime Institute (Training Resources Maritime Institute / TRLMI)	San Diego, United States	$595	Book →
6 Jul 2026 to 10 Jul 2026	Maritime Institute (Training Resources Maritime Institute / TRLMI)	San Diego, United States	$595	Book →

WHERE TO STUDY

Schools Offering This Course

Maritime Institute (Training Resources Maritime Institute / TRLMI)

San Diego, United States

View school →

Important: Course dates, availability and prices shown are indicative only and were gathered from providers' public websites. Always confirm current dates, availability and pricing directly with the training provider before booking. All bookings are made directly with the provider. YachtSync is not a party to any booking. Course information is for guidance only.

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