NEWS FLASH: NIGERIAN NAVY HYDROGRAPHIC OFFICE WISHES YOU AND YOUR LOVED ONES HAPPY EID-AL-ADHA; NIGERIAN NAVY HOLDS WORLD HYDROGRAPHIC DAY 2021 CELEBRATION VIRTUALLY; NIGERIAN NAVY SURVEY SHIP, NNS LANA ARRIVES LAGOS;2021 TIDAL PREDICTION TABLE AVAILABLE AT NNHO APAPA AND NNHS PORT HARCOURT; NOW AVAILABLE- OGUNKOBO TO TINCAN CHART NG4401, LAGOS HARBOUR CHART NG2501 AND TRAINING CHARTS OF NIGERIAN WATERS AT NNHO APAPA AND NNHS PORT HARCOURT