UPRIGHT SOUNDINGS. Certain soundings in this chart are compiled from old and smaller scale surveys. Mariners are warned 
to navigate with extra caotion when in the vicinity of the areas

PERUMAN TEGAK. Sesetengah peruman di carta ini disusun daripada pengukuran lama dan bersekala lebih kecil. Amaran diberi 
kepada pelaut supaya berwaspada semasa memanduarah di perairan berkenaan.