Are The Great Lighthouse and Magellan's Voyage cumulative?

[Lanzelot]

I built both of them in a multi-player game, but I didn't get a speed-increase after building Magellan's?
Notes:

• I haven't researched Magnetism yet, so the Lighthouse is not yet expired!
• I'm seafaring. Is there perhaps a "maximum speed increase" like "one can't get more than two extra movement points for ships", and I already have one for being seafaring, one for TGL, and therefore the one for Magellan's is capped off?
• Is it a bug? If yes, in all versions? Only in some? Only in multi-player?

 

[bigFRANK]

Im sure i have had a +2 before for a short period before completing magnetism but i cant say that i have seen it with a seafaring civ, may be one to check out on the editor at some point.

 

[timerover51]

I built both of them in a multi-player game, but I didn't get a speed-increase after building Magellan's?
Notes:

• I haven't researched Magnetism yet, so the Lighthouse is not yet expired!
• I'm seafaring. Is there perhaps a "maximum speed increase" like "one can't get more than two extra movement points for ships", and I already have one for being seafaring, one for TGL, and therefore the one for Magellan's is capped off?
• Is it a bug? If yes, in all versions? Only in some? Only in multi-player?

One of my minor discoveries, that I have posted in the Creation and Customization section is that the only way to have the Great Lighthouse and Magellan's Voyage cumulative is set one of them for +1 and one for +2. If they have the same bonus, you only receive one. With Seafaring, and one of the two Wonders set for +1 and one set for +2, it is possible to have a total bonus of +4 for naval movement. That does assume that the Wonders do not go obsolete.

 

[Lanzelot]

If they have the same bonus, you only receive one.

How did this bug-riddled game ever pass quality assurance?!?

Well, good luck that the Lighthouse will expire soon, so I didn't waste the shields for Magellan's completely...

 

[timerover51]

How did this bug-riddled game ever pass quality assurance?!?

Well, good luck that the Lighthouse will expire soon, so I didn't waste the shields for Magellan's completely...

I am not sure that I would call that a bug, as the programmers might have assumed that only in rare cases would the same player have both Wonders, or that a player would get Magellan's before the Great Lighthouse goes obsolete. Also, in the Basic game and in Play the World, both Wonders only have a bonus of +1, which is not additive.