
Bought for use on a cruise ship based on reviews others have used successfully. The carnival is confiscated. The Carnival Freedom ship has a number of additional power outlets in its rooms, including USB, so additional power outlets are not a problem for some ships at this time, and are expected to be the same as for ships converting in the future. Although I used at home - there can't be too many USB in the outlet. :)

Allocacoc PowerCube ExtendedUSB, 4 Outlets, 2 USB Ports, 5 ft Cable, Mounting Dock, Surge Protection, Childproof Sockets, ETL Certified - Blue
12 Review

Fellowes 10-Outlet Metal Split Surge Protector - 1,250 Joules, 6ft Cord in Black and Silver
12 Review

BESTTEN Wall Outlet USB Charger: Surge Protector with LED Night Light, 4 USB Ports, 6 AC Outlets - ETL Listed, White
12 Review

Southwire 34930 Surge Guard 30A: Full Protection Portable with LCD Display - Superior Safety in Sleek Black Design
12 Review

Extender Xiaomi Mi Power Strip 3, XMCXB01QM, 3 sockets, 10A / 2500 W black 1.8 m
20 Review

Extender Xiaomi Mi Power Strip 3, XMCXB01QM, 3 sockets, C/C, 10A / 2500 W white 1.8 m
30 Review

4 Outlet Power Strip with 3 USB Charger Ports and 5ft Braided Cord π‘ - Flat Plug, Wall Mountable Desktop Charging Station for Home, Office, and Cruise Ship use.
12 Review

Extender Xiaomi Mi Power Strip 3, XMCXB01QM, 3 sockets, 10A / 2500 W white 1.8 m
26 Review