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SG-独眼巨人号

这艘潜艇在z86海域失事了，被打捞上来时全员已经奄奄一息，虽然抢救及时但已经不可能再次从事航行工作。根据日志描述，潜艇遭到了巨兽袭击。
经过修复并加装炮台后，这艘独眼巨人号将重新投入到木卫二的探索事业中。
解锁炮台权限需要密钥请仔细寻找线索。

海娥号mk1有舱门隐形按钮
海娥号mk2是普通按钮门
两者都需要爬隐形梯子才能出舱

[SG-Cyclops]

The submarine was wrecked in the waters of Z86 and was recovered with its entire crew dying, rescued in time but unlikely to be able to sail again. According to the logbook, the submarine had been attacked by a giant beast.
After being repaired and fitted with turrets, the Cyclops will return to exploring Io.
A password is required to unlock the fort, so look for clues.

Sea Echo mk1 has a hatch cloaking button
Sea Echo mk2 has a normal button door
Both require climbing an invisibility ladder to exit the hatch