During cruise MSM118 (June 18 – July 4, 2023), sub-bottom profiles were collected on the Scotian Shelf, northwest Atlantic, using the hull-mounted Atlas PARASOUND P70 echosounder on RV MARIA S. MERIAN. The system transmitted primary high-frequency (PHF, 18 kHz) and secondary low-frequency (SLF, 4 kHz) signals in a narrow beam, providing high-resolution imaging of sediment layers down to ~150 m penetration. Quasi-equidistant pulse sequences were applied in deep water, while single pulse transmission was used in shallow areas (<200 m) to maintain pulse resolution of 0.188 m. Beamforming was corrected for vessel motion, and data were stored in .asd and .ps3 formats, with PHF used for seafloor detection. PARASOUND data acquisition supported station selection for sediment sampling, targeting Holocene-age deposits. Detailed mapping focused on pockmarks in the LaHave Basin (MSM118-14) and Quaternary channels in the Misaine Bank area (MSM118-03, MSM118-19, MSM118-20), revealing post-glacial sediment sequences and acoustic indications of gas migration.