What Are the Power and Plug Rules on Carnival, Royal Caribbean, and Norwegian Cruises?

Quick Answer: Carnival and Norwegian still allow non-surge multi-outlet power strips. Royal Caribbean banned all multi-outlet strips in September 2024 — including strips without surge protection. The only charging device that passes security on all three cruise lines is a multi-port USB charger (like a GaN charger) with a single AC input and no surge protection components. Do not bring the DOACE LC-X35 on any cruise ship — its built-in surge protection will be confiscated.

Every cruise line has its own rules about what you can plug in inside your cabin. Pack the wrong device and security will confiscate it before you even step aboard. The tricky part: the same power strip that passes on a Carnival ship may be taken away on a Royal Caribbean ship. This article breaks down the exact rules for each of the three largest cruise lines — Carnival, Royal Caribbean, and Norwegian — item by item, so you know what to pack before you leave home.

For a broader look at cruise power planning, including what voltage cruise ships use and how to handle charging at international ports of call, see our cruise-approved travel adapter and converter guide. For help choosing the right power strip, see our cruise-approved power strip buying guide.

Why Cruise Ships Restrict Power Devices

Before looking at each cruise line's specific rules, it helps to understand why these restrictions exist — because the reason is not "ships have stable power so you don't need surge protection." That explanation appears on many travel blogs and it is wrong. The real reason is about how ship electrical systems handle faults.

Ship Electrical Systems Are Not Like Your Home

Your home connects to a utility grid with a solid earth ground. Cruise ships use a fundamentally different design called an IT system (Isolated Terra), also known as a floating grounding system. The ship's generators are electrically isolated from the hull — there is no direct path to ground. This is required by the SOLAS (Safety of Life at Sea) convention because it allows a ship to keep operating even when one electrical fault occurs. In the middle of the ocean, you cannot afford to lose all power because of a single tripped breaker.

The problem is what this means for surge protectors. A standard surge protector contains Metal Oxide Varistors (MOVs) — components designed to shunt excess voltage to ground. At home, on a grounded TN system, this works perfectly: the MOV diverts a spike and your breaker trips if something goes wrong. On a ship's floating IT grid, the MOV has no true ground reference to shunt to. It can misfire, degrade over time, and eventually fail in a way that generates heat — continuously, inside a sealed cabin, potentially for hours before anyone notices.

On land, a failed MOV triggers your circuit breaker immediately. On a ship's IT system, a failed MOV only generates a monitoring alert — the circuit itself stays live. That is the actual fire risk: a quietly overheating MOV in a power strip sitting behind someone's nightstand while they are at dinner.

Cabin Power Is Limited

Each cruise cabin typically has a 15-amp, 110V circuit — roughly 1,650 watts of total capacity. But the room's lights, mini-fridge, bathroom fan, and built-in hair dryer are already drawing from that same circuit. Extension cords are banned because they enable daisy-chaining (plugging one strip into another), which can push the circuit well beyond its rated capacity. Unlike a hotel connected to a city power grid, a ship generates all its own electricity through onboard diesel generators and cannot draw more from anywhere else.

Carnival Cruise Line

Cabin Outlet Setup

Carnival cabins vary significantly by ship age. Older ships like Carnival Glory (2003) typically have 1–2 US-style 110V outlets (Type A/B) plus a low-power "shavers only" bathroom socket. Newer Excel-class ships — Mardi Gras (2021), Carnival Celebration (2022), and Carnival Jubilee (2023) — typically offer 2–3 110V outlets, one European-style 220V outlet (Type C/F), and USB-A charging ports built into the vanity area. Suite categories may have additional outlets.

What Carnival Allows

• Non-surge multi-outlet power strips — Carnival is one of the two major lines that still allows basic multi-outlet strips as long as they contain no surge protection circuitry
• Single-outlet plug adapters — one-in, one-out shape converters
• USB chargers and GaN multi-port chargers — any USB-output charger with a single AC plug is fine
• Personal electronics chargers — phone, tablet, camera, laptop chargers
• Hair dryers, curling irons, flat irons — cabins have a built-in hair dryer, but you can bring your own
• CPAP and medical devices — allowed; Carnival recommends notifying Guest Access before your trip

What Carnival Prohibits

• Surge protectors — any power strip with built-in surge protection will be confiscated at embarkation
• Extension cords
• Heating appliances — electric kettles, clothing irons, hot plates, space heaters, electric blankets, steam garment steamers, toasters
• Open flame devices

How Strict Is Carnival's Security?

Moderate. Carnival screens all luggage through X-ray at embarkation. Security staff will flag obvious surge protectors — typically identified by indicator lights, on/off switches, or "surge protection" labels on the device. Non-surge multi-outlet strips with a simple, flat design pass through without issue. Multiple cruise community reports confirm that Carnival rarely questions basic non-surge strips. Confiscated items are stored and returned at disembarkation.

Royal Caribbean International

Cabin Outlet Setup

Royal Caribbean's fleet spans over 25 years of ship designs, so cabin outlet configurations vary widely:

• Voyager / Radiance class (1999–2004) — 1–2 US-style 110V outlets, minimal USB
• Oasis / Quantum class (2009–2016) — 2 US-style 110V outlets + 1 European 220V outlet + USB-A ports
• Icon class — Icon of the Seas (2024), Utopia of the Seas (2024) — 2–3 US-style 110V outlets + 1 European 220V outlet + USB-A + USB-C ports

What Royal Caribbean Allows (Post-September 2024)

• USB-only chargers and GaN multi-port chargers — any charger that takes a single AC input and outputs only USB (no multi-AC output) is explicitly allowed
• Single-outlet plug adapters — one-in, one-out shape converters
• Personal device chargers — phone, tablet, laptop, camera
• CPAP and medical devices — allowed; contact the Access Department before your trip
• Hair dryers, curling irons, flat irons

What Royal Caribbean Prohibits

• ALL multi-outlet power strips — including non-surge strips — this is the critical September 2024 change. If a device has multiple AC output sockets, it is banned regardless of whether it has surge protection
• Surge protectors of any kind
• Extension cords
• Heating appliances — kettles, irons, hot plates, space heaters

The September 2024 Policy Change

Before September 2024, Royal Caribbean's policy matched Carnival's — non-surge multi-outlet strips were allowed. In September 2024, Royal Caribbean updated its prohibited items list to ban all multi-outlet AC strips. This caught many repeat cruisers off guard — travelers who had used the same power strip on previous Royal Caribbean sailings found it confiscated at the gangway.

This policy applies to all Royal Caribbean International ships and extends to the company's sister brands — Celebrity Cruises and Silversea. If you previously cruised Royal Caribbean with a multi-outlet strip and plan to do so again, check the current policy before packing.

How Strict Is Royal Caribbean's Security?

The strictest of the three major lines. Since the September 2024 update, multiple travelers on Reddit and Cruise Critic forums report that security staff actively look for multi-outlet strips — checking the bottom label, asking about the number of AC outputs, and confiscating strips that were previously allowed. Enforcement varies by port and security staff, but the trend is clearly toward stricter screening. Confiscated items are stored onboard and returned at disembarkation.

DOACE 70W GaN Travel Adapter

The DOACE 70W GaN Travel Adapter plugs into one outlet, provides 2 USB-C PD ports + 2 USB-A QC ports for simultaneous device charging, and contains zero surge protection components. It delivers up to 70W total — enough to fast-charge a laptop and a phone at the same time — while staying fully within Royal Caribbean's updated rules.

Norwegian Cruise Line

Cabin Outlet Setup

Norwegian's outlet setup varies by ship generation:

• Older ships (Norwegian Gem 2007, Norwegian Epic 2010) — 1–2 US-style 110V outlets + bathroom low-power socket
• Breakaway / Breakaway Plus class (2013–2019) — 2 US-style 110V outlets + some USB-A ports
• Prima class (Norwegian Prima 2022, Norwegian Viva 2023) — 2 US-style 110V outlets + 1 European 220V outlet + USB-A + USB-C ports

What Norwegian Allows

• Non-surge multi-outlet power strips — like Carnival, Norwegian still allows basic multi-outlet strips without surge protection
• Single-outlet plug adapters
• USB chargers and GaN multi-port chargers
• Personal electronics and grooming devices — phone, tablet, laptop, camera chargers, curling irons, flat irons
• CPAP and medical equipment — contact Norwegian's accessibility team before your trip

What Norwegian Prohibits

• Surge protectors
• Extension cords
• Heating appliances — kettles, irons, hot plates, space heaters
• Open flame devices

How Strict Is Norwegian's Security?

Moderate to relaxed — the least strict of the three major lines. Norwegian screens luggage at embarkation but primarily flags obvious prohibited items (heating appliances, devices with visible surge protection indicators). Non-surge multi-outlet strips pass through without issue in the vast majority of reports. That said, enforcement can vary between ships and security staff — there is no guarantee.

Side-by-Side Comparison

The Safest Charging Setup for Any Cruise Line

No matter which cruise line you sail, the following approach will pass security on every ship and keep all your devices charged:

Option 1: GaN Multi-Port USB Charger (Best for Most Travelers)

A GaN multi-port USB charger takes a single AC input and provides multiple USB-C (PD) and USB-A (QC) outputs. It has no multi-AC outlets and no surge protection — making it compliant with every cruise line. The DOACE 70W GaN charges 3–4 devices simultaneously (e.g., laptop at 45W PD + phone at 20W PD + earbuds + smartwatch), weighs about 150g, and costs $25–45.

DOACE 70W GaN Travel Adapter

Option 2: Non-Surge Multi-Outlet Strip (Carnival and Norwegian Only)

A basic power strip with no surge protection, no indicator light, and no on/off switch still works on Carnival and Norwegian. But it will be confiscated on Royal Caribbean. If you cruise different lines, this is not a universal solution. For a detailed buying guide, see our cruise-approved power strip buying guide.

Option 3: Voltage Converter Without Surge Protection (For 110V-Only Devices)

If your cabin has a European 220V outlet and you need to use US-only 110V devices (certain hair styling tools, for example), the DOACE LC-C30 converts voltage without any surge protection circuitry. It has a single AC output and 4 USB ports, and contains no components that would trigger a confiscation on any cruise line.

DOACE LC-C30 (350W Travel Converter)

CPAP and Medical Devices on Cruise Ships

All three cruise lines — Carnival, Royal Caribbean, and Norwegian — allow CPAP machines onboard. Here is what you need to know:

• Notify the cruise line before your trip — Contact Carnival's Guest Access, Royal Caribbean's Access Department, or Norwegian's Accessibility Team. You typically do not need a doctor's note, but advance notification helps ensure your cabin is set up correctly.
• Most modern CPAP machines do not need a voltage converter — The ResMed AirSense 10/11 and Philips DreamStation 2 accept 100–240V input. Just plug them directly into any cabin outlet — 110V or 220V — and they work.
• If your CPAP needs a voltage converter — some older models are 110V-only. On Carnival and Norwegian, the DOACE LC-C30 (no surge protection, 350W) can step down 220V to 110V safely. On Royal Caribbean, contact the Access Department — they may be able to assign you a cabin with an appropriate outlet.
• Watch the heated humidifier — CPAP with a heated humidifier draws significantly more power (70–90W) compared to CPAP alone (20–30W). Make sure any converter you use has enough continuous wattage headroom.
• Bring distilled water — cruise ships do not always stock distilled water for CPAP humidifiers. Bring a small supply or request it from guest services early.

For a full guide on traveling with a CPAP, including converter sizing and airline rules, see our CPAP travel converter buying guide.

What "Cruise Approved" Actually Means

"Cruise approved" is not an official certification from any cruise line. No cruise company certifies or endorses specific power strip brands. The phrase was created by Amazon sellers and travel bloggers to describe products that comply with the most common cruise rules — specifically, power strips with no surge protection components.

This matters because a product labeled "cruise approved" on Amazon may still be confiscated if it has hidden surge protection components, or if you are sailing Royal Caribbean (which now bans all multi-AC-outlet strips regardless). Always check the actual prohibited items list for your specific cruise line rather than relying on a seller's "cruise approved" label.

Which DOACE Products Can You Bring on a Cruise?

The LC-X35 is DOACE's best converter for international land travel — its pure sine wave output is ideal for sensitive electronics like CPAP machines and laptops. But its surge protection component makes it a non-starter for cruise ships. For cruise travel, the GaN chargers and LC-C30 are the correct choices.

What About Other Cruise Lines?

While this guide focuses on the three largest lines, the general principles apply across the industry:

• Disney Cruise Line — bans surge protectors and extension cords; allows non-surge multi-outlet strips
• Celebrity Cruises — follows Royal Caribbean's policy (same parent company); all multi-outlet AC strips banned
• MSC Cruises — bans surge protectors and extension cords; non-surge strips generally allowed
• Princess Cruises, Holland America — ban surge protectors and extension cords; non-surge strips generally allowed

When in doubt, pack a GaN multi-port USB charger and a single plug adapter. That combination is universally accepted on every cruise line.

Frequently Asked Questions

Will security actually confiscate my power strip?

Yes. All three cruise lines screen luggage through X-ray at embarkation, and prohibited electrical items are flagged and held. Confiscated items are typically stored onboard and returned at disembarkation. Royal Caribbean has been particularly aggressive since September 2024 — cruise community reports confirm that even non-surge multi-outlet strips are regularly confiscated.

How do security staff tell if a power strip has surge protection?

Security typically checks for visible indicators: an on/off switch, indicator lights, a "surge protection" or "joule rating" label on the bottom of the strip, or a chunky housing that suggests internal circuitry. Strips with a flat, minimal design and no markings about surge protection are less likely to be flagged — though Royal Caribbean now confiscates all multi-AC-outlet strips regardless.

Are the cabin USB ports fast enough for my phone?

Most cabin USB ports output 5V at 1A or 2.1A (5–10.5W), which charges modern smartphones very slowly — 4 to 6 hours for a full charge. Even the USB-C ports on the newest ships may not support full PD fast charging. If speed matters, bring your own charger. The DOACE 100W GaN can get a modern phone from 0% to 50% in about 30 minutes.

My cruise visits European ports. Do I need an adapter for shore excursions?

If you plan to charge devices at cafes, hotels, or airports during port days, yes. European countries use Type C/F plugs at 220–230V. The DOACE 70W GaN includes built-in universal plug adapters that handle both the ship and any port of call. For country-specific details, see our US to Europe voltage guide.

Can I use a voltage converter on a cruise ship?

It depends on the converter. A voltage converter without surge protection (like the DOACE LC-C30) is allowed on all three cruise lines — it has a single AC output and no banned components. A voltage converter with built-in surge protection (like the DOACE LC-X35 or HC-X11) will be confiscated. Before packing any converter, check whether it contains surge protection circuitry.

What happens if I need to charge more than four devices?

With two cabin outlets and a multi-port USB charger, you can charge 6–8 devices overnight: 3–4 via USB from the GaN charger on one outlet, 1 device direct on the second outlet, plus 1–2 more on the cabin's built-in USB ports. Charge phones and cameras overnight and top off other devices during the day when you are off the ship.

What if my power strip is confiscated — do I get it back?

On all three cruise lines, confiscated items are stored onboard in a secure area and returned on disembarkation day. You typically pick them up at a designated area near the gangway. Some travelers report that the pickup process can be slow or disorganized on busy disembarkation mornings — label your device with your name and cabin number to make retrieval easier.

This article is for informational purposes only. Cruise line policies change frequently. Always verify the current prohibited items list on your specific cruise line's website before packing. Last reviewed: 2026.