Ships with Benefits
There are several ways of starting a Traveller with a ship after completing some careers, though it is difficult. However, for simplicity and campaign balance, only one Traveller may start with a ship in their possession before the campaign begins. If two or more Travellers have gained ships, you should debate who actually gets a ship. The other players will receive an additional pension of Cr25000 every year for every time they rolled a ship as a benefit. This represents part ownership in a commercial vessel and the dividends received on the investment.
While individual ship shares cannot be redeemed for cash either, if they are not used to help purchase a ship the Traveller will instead receive an additional pension of Cr1000 every year (they might not be in possession of the ship, but it is somewhere out there in the galaxy, earning dividends for those who invested in it, possibly many years ago).
~MgT 2ed, pg 46