阅读诗歌，回答问题。

                                                                              舟过谢潭三首（之一）
                                                                                   （宋）杨万里
                                                                    风头才北忽成南，转眼黄田到谢潭。
                                                                    仿佛一峰船外影，褰帷^①急看紫巉岩。
                                                                【注释】①褰（qiān）帏：掀起帘子。