a, . DD fhbo/m. Ped (2) Tne island na surroundin~ .cter tears itn fisn, turtles and sca oirds, ec. Roncerix Atoll: (4) Tn snip dia not attetpt ressc°¢ anto th avoll vzecause of. the poor navigational aids available. It 18 pn2Lisvea taut o snailo.. dreit VeSSel SNOuUsu sxvorichce Very aittl<: Qissicuity in wasin, peSsSdgu. (2) Sméit Boatans is rourh, put not aan:crous, dxtrers cere sould be exercised when approaching Bock Isl=nda as miny corai heads ere present and tro water is very shallow. d. Ailinjinse Atoll: (1) Onty srall boit entry sas mad2. have very little difficulty making entry. A shallo. drartt vessel should Navigational cuts were very poor. (2) Small boating was rough but not dangerous. e. r Utirix Atoll: (1) The four beacons shown on HO chart 6023 have been replaced by two black buoys. It is understood that the Trust Territory AKL rakes reg- ular entry into Utirik Atoll through Utirik Passage. around Utirik Island are missing. The beacons on and (2) Small boating is not difficult, but a sharp watch should be maintained for coral heads. 4. mecommendations and Summary: a. SAV BRINO FRE Survey of these atolls from a DDZ type vessel is somewhat inefficient in that Rongelap is the only atoll, of the five visited, that can be entered and navigated safely, thus limiting the number of islands that can be covered in a given time. Boat handling operations outside the atolls were difficult due to heavy swells. “ith the forces available, it is believed that the use of a DDE is the most practicable solution for similar missions. For operations subsecuent to "CaSTLi", it is recommended that a smaller class ship of shallow draft be used. This would permit entry into most lagoons shortening boat runs, in some cases twenty miles. O° OBITS 3Y