Nautilus LifeLine Marine Rescue GPS (nextGen)
Nautilus LifeLine Marine Rescue GPS (nextGen) is backordered and will ship as soon as it is back in stock.
Pickup currently unavailable at In Store
Nautilus LifeLine Marine Rescue GPS (nextGen) is backordered and will ship as soon as it is back in stock.
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Product Information
The Nautilus LifeLine Marine Rescue GPS (nexGen) is a personal, subscription-free marine rescue beacon for divers and boaters that uses AIS and DSC over VHF radio waves to send your exact GPS position and a man overboard distress alert straight to nearby vessels. This third-generation nexGen model is diver depth rated to 425 feet (130 meters) with the dive cap closed, fixes position to better than 1 meter, and transmits for up to 100 hours on two CR123 3V batteries, with no MMSI, license, registration or subscription required.
Who it is for
This is self-rescue gear for divers who get separated from the boat: drift divers, open ocean and blue water divers, liveaboard and current divers, plus boaters, kayakers and crew who want a man overboard alert they can carry on their person. Two modes cover both situations. Distress Alert transmits a continuous man overboard distress message until you turn it off, while Position Advisory reports your position to nearby vessels without declaring an emergency.
Key details
- GPS accuracy of less than 1 meter, with acquisition in 25 to 40 seconds.
- Range up to 5.5 miles (about 9 km) at sea level, and a maximum demonstrated range of 34 miles (55 km) to a high, elevated receiving antenna.
- AIS on 161.975 MHz and 162.025 MHz, DSC on 156.525 MHz (Channel 70), distress on 156.8 MHz (Channel 16).
- Waterproof to 425 feet (130 m) seawater with the dive cap closed, IP68 with the cap open.
- Floats, positively buoyant, and includes a strobe light.
- Runs on two user-replaceable CR123 3V batteries (not included).
Compatibility and sizing
The nexGen talks to any AIS-equipped vessel and to any marine VHF radio with DSC, so no dedicated base unit, MMSI registration or airtime plan is needed. It works worldwide, though functionality can vary by country. Nautilus backs it with a 5 year warranty from date of purchase for the original owner buying from an authorized dealer.
DiveCatalog.com is an authorized Nautilus LifeLine dealer and a real dive shop in Irvine, California since 2003. Call 888-701-4017 or chat with us if you have questions about operation, batteries or how the nexGen fits into your safety kit.
- Third-generation nexGen design rebuilt with all-new, latest-generation electronics compared with the 2010 Diver and 2017 MOB Gen2 models.
- Dual AIS and DSC technology broadcasts a man overboard distress alert to AIS-equipped ships and a DSC distress relay to marine VHF radios.
- Two operating modes Distress Alert transmits continuously until deactivated, Position Advisory sends a position report without triggering a distress call.
- No MMSI, license or subscription no registration, airtime plan or service fee is required to use it.
- GPS accuracy under 1 meter with position acquisition in 25 to 40 seconds.
- Up to 100 hours of transmit time on two fresh CR123 3V batteries (batteries not included, user replaceable).
- Diver depth rated to 425 feet (130 m) seawater with the dive cap closed, and IP68 rated with the cap open.
- Range up to 5.5 miles at sea level with a maximum demonstrated range of 34 miles to an elevated receiver antenna.
- Built-in strobe light adds visual signaling to the radio transmission.
- It floats positively buoyant so it stays on the surface with you.
- Works worldwide with any AIS-equipped vessel or DSC-equipped VHF radio, functionality may vary by country.
- 5 year warranty from date of purchase against manufacturing defects for the original owner.
| Model | MOB nexGen (third generation) |
| Technology | AIS and DSC over marine VHF |
| Messages | Individual Distress Relay, Distress Alert, Position Advisory |
| GPS Accuracy | Less than 1 meter |
| GPS Acquisition Time | 25 to 40 seconds |
| Transmit Time | Up to 100 hours with full batteries |
| Range at Sea Level | Up to 5.5 miles (about 9 km) |
| Maximum Demonstrated Range | 34 miles (55 km) to an elevated receiver antenna |
| AIS Frequency | 161.975 MHz (AIS 1) and 162.025 MHz (AIS 2) |
| AIS Transmit Power | 1 Watt |
| DSC Frequency | 156.525 MHz (Channel 70) |
| DSC Transmit Power | 0.5 Watt |
| Distress Frequency | 156.8 MHz (Channel 16) |
| Batteries | Two CR123 3V, user replaceable, not included |
| Waterproof Depth | 425 feet (130 meters) seawater with dive cap closed |
| Rating with Cap Open | IP68, dust-tight and protected to approximately 3 feet (1 meter) immersion |
| Buoyancy | Floats, positively buoyant |
| Signaling | Integrated strobe light |
| Environmental Temperature Range | -25°C to +55°C |
| Dimensions | 2.9 x 3.8 x 1.5 in (75 x 97 x 39 mm) |
| Weight | 4.6 oz (131 g) including batteries |
| Registration Required | None, no MMSI, license or subscription |
| Warranty | 5 years from date of purchase |
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
Does the Nautilus LifeLine nexGen work in the US?
Yes. Nautilus states the nexGen works worldwide, though functionality may vary by country, so confirm local requirements. Any AIS-equipped vessel or DSC-equipped marine VHF radio within range can receive the alert. No MMSI, license, registration or subscription is required, though Nautilus notes functionality may vary by country.
What batteries does the nexGen use and how long will it transmit?
It uses two CR123 3V batteries, which are user replaceable and not included. With full batteries the nexGen transmits for up to 100 hours. GPS acquisition takes 25 to 40 seconds and the unit fixes your position to better than 1 meter, then broadcasts up to 5.5 miles at sea level, or as far as 34 miles to a high elevated receiving antenna.
How deep can I take the Nautilus LifeLine nexGen on a dive?
The nexGen is diver depth rated to 425 feet (130 meters) in seawater with the dive cap closed. With the cap open it carries an IP68 rating, meaning dust-tight and protected against immersion to roughly 3 feet (1 meter), so the cap must be closed and the o-ring kept clean before every dive.
What is the difference between Distress Alert and Position Advisory mode?
Distress Alert sends a continuous man overboard distress transmission to AIS-equipped vessels and a DSC distress relay to nearby marine VHF radios, and it keeps transmitting until you deactivate it. Position Advisory sends a position report so boats can see where you are without triggering an emergency response, useful when you surface away from the boat but are not in trouble.
Review summary
Written reviews are still few for this one. The Nautilus LifeLine Marine Rescue GPS (nextGen) is a safety and signaling device that uses AIS/DSC technology to broadcast your position, accurate to 1.5 metres, to boats up to 34 miles away, with no MMSI, licence or registration needed. It is half the size of the original Nautilus radio, floats, is depth rated to 425 feet with the dive cap closed, and runs on user-replaceable batteries rated for 5 years. Early reviewers mention good value and quick service. It suits divers who want independent surface signaling.
What reviewers like
