2008 marked the 50th year since the scientists of old generation sown the first seed in underwater acoustic study. In such a special year, IACAS held a symposium in memory of this event on Dec.23. The leaders of IACAS, the delegates of the scientists of old generation, the researches and the section chiefs of administrative departments presented at the meeting, which was chaired by Deputy Director Pan Feng.

At the beginning of the symposium, Deputy Director Zhang Chunhua delivered a speech. He extended his sincere thanks to the delegates of scientists of old generationfor their coming to the meeting and expressed best wishes to the old comrades. He made a report to introduce the present situation of IACAS, the status quo of underwater acoustic study and the future direction of this study. Deputy Director Zhang bolstered the attendants by the good news that IACAS has been upgraded from B level to A level in the mid-term evaluation of Knowledge Innovation Program.

Prof. Hou Ziqiang 　 

 As the representatives of the scientists of old generation, Prof. Hou Ziqiang and Academician Zhang Renhe delivered speeches, respectively. Prof. Hou Ziqiang said he felt very excited to re-gather with so many old friends and colleagues. He pointed out that every aspects of work are developing flourishingly in IACAS, which can gratify the old generation for their tedious work and restless efforts. Nowadays, the world is changing with each passing day. Facing to the changes and challenges, we must inherit the innovative working style and absorb nutrition from various subjects and fields to keep us remain invincible in the global scientific competition. Academician Zhang Renhe said he was so glad to see his old friends are healthy and energetic. He recalled the days they spent together and sincerely extended his thanks to Reform and Opening-up Policy, which provided spacious platform for the full development of acoustic study. Academic Zhang also reminded the young scientist to carry forward the good traditions, combine the theory and application, personal interests and national demand and strengthen the integration of different subjects.　

In the following discussion, the present scientist of old generation talked freely, or recall the memorable passing days, or image the bright future. The symposium was end in a harmonious atmosphere.

Deputy Director Pan Feng