PEOPLE IN THIS STORY
人物表
Map：The Coasts of the North Sea in 1902
Map：From the Baltic to the Frisian Islands
Map：Friesland and the Frisian Islands
THE REASON WHY
缘起
1.An invitation to the Baltic Sea
波罗的海之约
2.A different kind of sailing
不一样的航行
3.The missing page in the log-book
航海日志缺页之谜
4.The pathfinders
探路者
5.A meeting and a warning
会面与警告
6.A young lady and a book
少女和书
7.A day out in the fog
雾中一日
8.An evening with the enemy
与敌人共进晚餐
9.The answer to the riddle
谜底
10.The last voyage
最后一次航行
A WARNING FOR THE FUTURE
警钟长鸣
Activities：Before Reading
Activities：While Reading
Activities：After Reading
