303/304 Ship Names

[Lt. Col. Mcoy]

Okay, so I was wondering, the Stargate program is an international program, right? So why are the Battle cruisers USS? (or RFS)

For instance, shouldn't the:

USS Prometheus
USS Deadelus
USS Oddessy
and
RFS Korelav,

be something like:

SCS Prometheus
SCS Deadelus
SCS Oddessy
and
SCS Korelav;

for something along the lines of 'Stargate Command Ship'?

Or even:

ESS Prometheus
ESS Deadelus
ESS Oddessy
and
ESS Korelav;

for 'Earth Star Ship', or 'Earth Space Ship'