Nautilus is a standalone GPS logger designed for long, uninterrupted operation without user interaction.

It records GPS position automatically and stores all data locally — without using mobile networks, cloud services, or subscriptions.

Originally built for sailing, Nautilus focuses on reliability, autonomy, and simplicity:

Turn it on, forget it for days, retrieve the full track afterwards.

KEY FEATURES

Fully offline GPS logging

• No SIM card
• No mobile network
• No cloud services
• No subscriptions

Long-endurance operation - Designed for continuous logging over 7+ days

Waterproof enclosure

• Suitable for marine and outdoor environments
• Resistant to salt water spray

Simple data access

• Data accessed via Wi-Fi using any web browser
• Works on PC, phone, or tablet
• No app installation required

Standard export formats

• GPX and KML supported
• Compatible with Google Earth, Mapy.cz, OpenCPN, Garmin tools, etc.

DESIGNED FOR

• Sailing & yachting (trip and route logging)
• Kayaking & paddleboarding
• Outdoor expeditions
• Long-duration tracking without charging
• Privacy-focused GPS data collection

REAL-WORLD BATTERY TEST (Cold Weather)

This unit was tested in real outdoor conditions, not simulated lab measurements.

Test conditions:

• Continuous GPS logging
• Outdoor environment
• Internal temperature recorded
• Ambient temperatures down to approx. –10 °C ( 14 °F )
• Test duration: ~7 days

Result:

• Stable operation for almost 7 full days
• Shutdown triggered by battery BMS protection (safe cutoff)
• Battery SOC, voltage, and internal temperature logged throughout the test

A battery SOC + temperature graph is included in the listing images. This provides transparent, real data instead of marketing estimates. In warmer conditions, runtime is expected to be longer than the cold-weather test shown.

EXAMPLE USAGE

Included screenshots show:

• GPS tracks displayed in Google Earth
• Tracks viewed in Mapy.com / Mapy.cz
• Nautilus built-in web interface
• GPX / KML file management

These are real tracks recorded by this exact device during sailing.

TECHNICAL OVERVIEW

• Device type: Standalone GPS logger
• Logging interval: ~16 seconds
• Battery: High-capacity Li-Ion
• Operating time: 7+ days continuous logging
• Connectivity: Wi-Fi (temporary access point)
• Export formats: GPX, KML
• Enclosure: Waterproof
• Dimensions: approx. 180 × 100 × 60 mm (7.1 × 3.94 × 2.36 inches)

CONDITION & TRANSPARENCY

• Hand-built, functional prototype
• Fully tested and used in real conditions
• May show minor cosmetic marks or micro-scratches from normal handling
• No internal modifications after testing

This is not mass-produced consumer electronics, but a carefully built and well-tested device intended for users who value function and reliability.

WHAT’S INCLUDED

• Nautilus GPS Logger (fully assembled)
• Internal rechargeable Li-Ion battery
• Pre-installed firmware
• No external accessories required

IMPORTANT NOTICE

• This is an offline GPS logger, not a real-time tracker
• No live tracking
• No remote access
• Designed for post-activity track retrieval

Ideal for:

• Sailing
• Expeditions
• Kayaking
• Hiking
• Long outdoor trips

This is a prototype device intended for hobby, experimental, and recreational use. Not certified for professional navigation, safety-critical, or life-support applications.

WHY NAUTILUS?

If you want:

• No subscriptions
• No cloud dependency
• No mobile signal required
• Long autonomous runtime
• Full control over your data

Nautilus does exactly that — and nothing you don’t need.