frsh DDZ449/te: ‘. eke, Om, P2g2 yy (2) Tne islend no surroundin~ .eter teens witn fisn, turtles wid $ca@ Olrds. c, Ron srax Atoll: (12) Tne snap dia not attetpt czss~ 2 into th2 avoil oecause of ins poor navagational aids available. It as beiievea taut a sntilo. arait VeSssi SnOusu sAveracnce Very sittlse Gissicuaty 4 sending, SueSSaer. (é) Sméit Boatan: as rouch, out not aan: crsus., axtrets cé re Si.OulG be exercised when approaching Bocn Isl:na as niuny coral hee a5 +resent uno the water is very shallow. qd. <.re Aldrnagince Atoll: (1) Only staid bout aniry sas maac. have very little difficulty making entry. A shelio. drait vessel should Navigational cuts were very poor. (2) Small boating was rough but not dangerous, @. Utirix Atoll: (1) The four beacons shown on HO chart 6023 have been replaced by two black buoys.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 makes rec- 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. Recommendations and Summary: a. Survey of these atclls 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 thst can be covered ina given time. Boat handling operations outside the atolls were difficult due to heavy swells. “Sith 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 2 smaller class ship of shallo.. draft be used. This would permit entry into most lagoons shortening boat runs, in some cases twenty miles. copledsDOE LANL, J-Olv. GO