SS Principe Umberto

History
NameSS Principe Umberto
NamesakePrince Umberto
OwnerNavigazione Generale Italiana
Port of registryGenoa
BuilderCantieri Navali del Tirreno, Palermo
Yard number13
CompletedApril 1909
FateSunk by U-5, 8 June 1916
General characteristics
Tonnage7,838 GRT
Length145.1 m (476 ft 1 in) (pp)
Beam16.3 m (53 ft 6 in)
Propulsion2 × quadruple expansion steam engines
Speed16 knots (30 km/h)

SS Principe Umberto was an Italian passenger and refrigerated cargo ship built in 1908 for Navigazione Generale Italiana. During World War I, Principe Umberto served as an armed merchant cruiser.

While transporting troops in the Adriatic in June 1916, the ship was sunk by Austro-Hungarian U-boat U-5 with the loss of 1,926 men. It was the worst naval disaster of World War I in terms of human lives lost.