Act One, page 72 says this:
Alternatively, if the Travellers are using the Velos tis Alitheia, they can jump to Farhome in secret from Prubisk, conduct an operation and rejoin the Ventura Fortuna at Kamodoo. The liner will operate at a reduced capability of jump-1, necessitating a stop at Basilling, but with its Class A starport, this poses no operational problems.
The liner is reduced to jump-2 without Velos tis Alitheia.