[{"data":1,"prerenderedAt":193},["ShallowReactive",2],{"leaderboard-total":3,"spot-seo-ss-undola-wreck":9,"spot-ss-undola-wreck":51},{"entries":4,"total":5,"period":6,"type":7,"generated_at":8},[],0,"all_time","reports","2026-10-03T06:32:05.526386Z",{"title":10,"description":11,"canonical_url":12,"og_image":13,"structured_data":14,"breadcrumbs":44},"Snorkeling Conditions at SS Undola (wreck) - How's the Spot","Check snorkeling conditions at SS Undola (wreck), New South Wales. Excellent conditions, water 18.8°C, waves 0.39m","https:\u002F\u002Fhowsthespot.com\u002Fspots\u002Fss-undola-wreck","https:\u002F\u002Fhowsthespot.com\u002Fog-default.png",[15,28],{"@context":16,"@type":17,"name":18,"description":19,"url":12,"geo":20,"address":24},"https:\u002F\u002Fschema.org","Place","SS Undola (wreck)","The SS Undola is a 41-metre steel-hulled coal collier that sank off Garie Beach in the Royal National Park on 20 December 1918 during a fierce southerly buster. Lying in 43–45 metres of water, the...",{"@type":21,"latitude":22,"longitude":23},"GeoCoordinates",-34.45,151.25,{"@type":25,"addressRegion":26,"addressCountry":27},"PostalAddress","New South Wales","Australia",{"@context":16,"@type":29,"name":30,"description":11,"url":12,"breadcrumb":31},"WebPage","Snorkeling Conditions at SS Undola (wreck)",{"@context":16,"@type":32,"itemListElement":33},"BreadcrumbList",[34,39,42],{"@type":35,"position":36,"name":37,"item":38},"ListItem",1,"Home","https:\u002F\u002Fhowsthespot.com",{"@type":35,"position":40,"name":26,"item":41},2,"https:\u002F\u002Fhowsthespot.com\u002Fexplore?region=new-south-wales",{"@type":35,"position":43,"name":18,"item":12},3,[45,47,49],{"label":37,"href":46},"\u002F",{"label":26,"href":48},"\u002Fexplore?region=new-south-wales",{"label":18,"href":50},"\u002Fspots\u002Fss-undola-wreck",{"id":52,"name":18,"slug":53,"latitude":22,"longitude":23,"description":54,"difficulty":55,"image_url":56,"status":57,"tide_constituents":58,"hazard_entries":109,"access_info_structured":131,"area_boundary":56,"routes":56,"created_at":139,"updated_at":140,"today_conditions":141,"today_verdict_view":163,"images":189,"submitted_by":190,"region_name":26,"verification_status":192,"verified_at":56,"disputed":159,"verifier_count":5,"last_verified_display_name":56},"ff9c5b97-4dc9-4146-8e27-f81ba38c31c5","ss-undola-wreck","The SS Undola is a 41-metre steel-hulled coal collier that sank off Garie Beach in the Royal National Park on 20 December 1918 during a fierce southerly buster. Lying in 43–45 metres of water, the wreck sits upright on a sandy bottom about 2.5 km offshore, with its triple-expansion steam engine, holds, and scattered coal cargo still visible. This deep, exposed offshore wreck is renowned among Sydney technical divers for its excellent fish life — including large schools of kingfish, morwong, and sweep — and its well-preserved historic structure.","advanced",null,"published",{"name":59,"amplitude":75,"phase":91,"latitude":22,"model":107,"epoch":108},[60,61,62,63,64,65,66,67,68,69,70,71,72,73,74],"2N2","J1","K1","K2","M2","M4","MF","MM","N2","O1","P1","Q1","S1","S2","T2",[76,77,78,79,80,81,82,83,84,85,86,87,88,89,90],0.021281515348561306,0.008598732378468808,0.1585378410161845,0.030859304193381325,0.48694166714882775,0.0032238029787235688,0.0013924242637819145,0.008278677599222975,0.10640764141613183,0.09273277334667918,0.05074674926796854,0.01307147015287247,0.008886100059454083,0.1127149577511452,0.005935334192002476,[92,93,94,95,96,97,98,99,100,101,102,103,104,105,106],278.0145020062293,22.397490560832686,324.78855171948686,309.9263280607803,308.67547502133027,265.3713492242254,350.6982810130579,37.84512025837458,296.6572622344012,293.36753939150464,319.62795712412014,286.06810615320296,305.2125590711068,317.6184240642168,261.8345592353178,"EOT20","1992-01-01T00:00:00Z",[110,115,119,125,128],{"name":111,"description":112,"severity":113,"season_start":36,"season_end":114},"Depth — 45 metres maximum","This is a deep technical dive requiring decompression procedures. Maximum depth of 45 m, average 43 m. Not suitable for recreational snorkeling or novice divers.","danger",12,{"name":116,"description":117,"severity":118,"season_start":56,"season_end":56},"Strong currents and swells","The wreck lies in exposed open ocean 2.5 km offshore. Southerly busters, strong currents, and large swells can develop rapidly, especially in summer months (November to April).","warning",{"name":120,"description":121,"severity":122,"season_start":123,"season_end":124},"Cold water temperatures","Sydney ocean water temperatures can drop to 15–18°C in winter, requiring thick wetsuits or drysuits for extended bottom times at depth.","caution",5,9,{"name":126,"description":127,"severity":118,"season_start":36,"season_end":114},"Boat traffic","Located 2.5 km off Garie Beach in a shipping lane approach to Port Hacking. Vessels approach from the south; dive boats must display appropriate dive flags.",{"name":129,"description":130,"severity":122,"season_start":36,"season_end":114},"Entanglement hazards","Fishing line, netting, and loose rigging on the wreck structure can entangle divers. Penetration of the wreck requires careful attention to silting and sharp metal edges.",{"directions":132,"parking":133,"facilities":134,"fees":137,"access_method":138},"The SS Undola lies 2.5 km off Garie Beach, within Royal National Park, approximately 45 km south of Sydney CBD. Access is exclusively by private dive charter boat launching from Port Hacking (Bundeena or Cronulla) or from chartered dive boats operating out of southern Sydney harbours. The wreck is not accessible from shore.","Parking is available at Garie Beach car park (Royal National Park entry fee applies) if meeting a dive boat launching nearby, but the wreck itself is only accessible via boat.",[135,136],"parking","toilets","Royal National Park entry fee applies for land access. Dive charter fees vary (typically $120–$200 per person for a two-tank wreck dive).","boat","2026-07-27T02:55:15.534484Z","2026-08-04T05:37:15.121187Z",{"verdict":142,"evaluated_at":143,"models":144},"go","2026-10-03T02:22:34.628233Z",[145,152,157],{"model_name":146,"is_favourable":147,"value":148,"threshold":149,"unit":150,"operator":151},"Wind Speed",true,8.78,10,"kn","lte",{"model_name":153,"is_favourable":147,"value":154,"threshold":155,"unit":156,"operator":151},"Wave Height",0.39,0.5,"m",{"model_name":158,"is_favourable":159,"value":160,"threshold":40,"unit":161,"operator":162},"Visibility",false,0.99,"","gte",{"verdict":142,"rating":164,"evaluated_at":143,"generated_at":143,"source":165,"confidence":166,"visibility":169,"parameters":170,"models_passed":188,"models_total":123},"Excellent","precomputed",{"level":167,"value":168},"High",100,{"score":160,"rating":56,"confidence":56},[171,172,177,180,185],{"name":153,"value":154,"label":56,"unit":156,"favourable":147,"score":43,"optimal_max":155,"marginal_max":36},{"name":173,"value":174,"label":56,"unit":175,"favourable":147,"score":43,"optimal_max":176,"marginal_max":114},"Swell Period",6.75,"s",8,{"name":146,"value":178,"label":56,"unit":150,"favourable":147,"score":43,"optimal_max":149,"marginal_max":179},8.7764376,15,{"name":181,"value":182,"label":56,"unit":183,"favourable":159,"score":36,"optimal_max":123,"marginal_max":184},"Precipitation",11.8,"mm",20,{"name":186,"value":56,"label":187,"unit":161,"favourable":147,"score":43,"optimal_max":56,"marginal_max":56},"Tidal Phase","slack",4,[],{"display_name":191},"Daniel","unverified",1791009199703]