200 Radii is 100 diameters.
Yes - sorry that observation is so automatic for me I neglected to point it out even though I meant to...
My comment was in reference to that as a reference to 100D other than just for terrestrial 'worlds' (a question I earlier posed). Though not an absolutely explicit one given the phraseology used.
far-trader's table supports that ambiguity as well - as further evidenced by the scan of same that
Otto provided above... 'a safe jump distance from large gas giant' of 10,000,000 km is less than 100D of the minimum diameter as defined in Book 6, which would be, at a minimum, 12,000,000 km (not sure if 1982 The Traveller Book provided a different Large GG diameter - or whether its contents are 'officially' considered superseded by later works).
Though I had my 'Jump Density Threshhold' (re:
http://www.travellerrpg.com/CotI/Discuss/showthread.php?t=26200 post #11) thought up as an armchair exercise - in play, simply used the 100D limit and ignored stars for jump (close in orbits not being interesting for play and most systems lacking larger stars, probably wouldn't have mattered), so really only used 100D for all worlds.
Otto Harkaman said:
... I think according to this chart and Mayday's scale 300,000km that a ship only has to be two or three hexes away to jump? In Mayday it says a ship has to be at least forty hexes away from a world pg11.?
That scale sounds off - at 6G, 300,000 km is over an hour, IIRC.
Jump in terms of space combat basically halts space combat, so not sure that would be very enjoyable? (BTW: 100 D safe limit can be reduced over 10D for ~42% risk in CT.)