33. 附圖為救援單位指引遇險船舶人員登岸之指示信號，其意義為何？ (A) 這是最佳登岸地點 (B) 此處登岸極危險 (C) 此處登岸極危險，較好登岸地點在指引方向 (D) 暫停在原處

4. What sound signals should a vessel engaged in fishing, sound in reduced visibility? (A) One prolonged followed by two short blasts at intervals of not more than 2 minutes. (B) One prolonged blast at intervals of not more than 2 minutes. (C) Two prolonged blasts at intervals of not more than 2 minutes. (D) Four short blasts at intervals of not more than 2 minutes.