Notice is hereby given to all mariners and other parties concerned that:
1. Reference: Letter from Diosdado A. Ureňa, CE EVP/General Manager of Geotechnics Philippines, Inc. dated 02 March 2018.
2. The GEOTECHNICS PHILIPPINES INC., a geotechnical company, taskeed by CAVITEX HOLDINGS, INC. to undertake a geotechnical investigation works for a Proposed Sangley International Airport Project located on the western part of Cavite City. Drilling works will commence on March 5 2018 to May 31, 2018 bounded by the following coordinates:
| Hole Designation | Latitude (deg) | Longitude (deg) |
| BH-1 | 14°31’3.68” N | 120°53’36.42” E |
| BH-2 | 14°30’38.63” N | 120°53’5.82” E |
| BH-3 | 14°30’13.54” N | 120°52’35.15” E |
| BH-4 | 14°29’48.41” N | 120°52’4.44” E |
| BH-5 | 14°29’25.15” N | 120°51’36.04” E |
| BH-6 | 14°30’32.04” N | 120°54’3.10” E |
| BH-7 | 14°30’7.52” N | 120°53’33.32” E |
| BH-8 | 14°29’42.79” N | 120°53’3.44” E |
| BH-9 | 14°29’17.16” N | 120°52’31.91” E |
| BH-10 | 14°28’53.76” N | 120°52’3.68” E |
| BH-11 | 14°30’2.92” N | 120°54’28.91” E |
| BH-12 | 14°29’38.47” N | 120°53’58.99” E |
| BH-13 | 14°29’13.74” N | 120°53’29.62” E |
| BH-14 | 14°28’49.30” N | 120°52’58.91” E |
| BH-15 | 14°28’24.46” N | 120°5’2.56” E |
| BH-16 | 14°29’21.73” N | 120°54’39.13” E |
| BH-17 | 14°28’22.91” N | 120°53’4.24” E |
| BH-18 | 14°27’54.40” N | 120°52’31.26” E |
3. In this connection, all ships/watercrafts transiting the vicinity of the above mentioned areas are advised to take note of the information and take necessary precautionary measures at all times.
4. The cooperation of all concerned in effecting widest dissemination of this information is requested.