You rolled a ship but so did another party member . . .
"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." - Traveller Core Rulebook, Mongoose 2e.Player Ship Matrix (first scratch draft)
Initially, I tried to base the above on the Free Trader - 25% is approximately MCr 11, and with one generic ship share being equivalent to MCr 1 towards the purchase of a ship, that would mean 11 ship shares (which I set down to MCr 10 for round numbers and the impacat of negative quirks). However, with the randomness of the benefit table and the fact that several careers have no ship shares as benefits, I reduced the share cost and added incremental steps to allow players to purchase down negative quirks or add positive quirks to preserve the value of ship shares. (The best possible benefit result for Rogue can skew things as it is 2D ship shares, an average of 7, meaning an experienced and lucky Rogue with a one term Merchant colleague could start with a Free Trader. I don't think that's a problem I'm bothered to solve, in fact, it sounds like it could a Rogue using a naive Merchant as a front/fall person).