BEACH & SEA FLOOR GUIDE // North Shore · Ehukai BeachExpert Only / Heavy Reef Barrel

Banzai Pipeline & Backdoor · Oahu — Reef Mechanics, Channels & Wind Shadow

Early-season WNW (310°) swells clear sand off the first reef while ENE trade winds hold the barrel lip open.

起乘警示: 浅礁上陡峭跌落。失误摔倒时请尽量平身向远离暗礁方向弹出。

Expert Only / Heavy Reef Barrel · Max 6.5m

Swell: 1.5m – 4.5m

迎涌角度窗口

WNW / NW (305° – 330°)

Angle: 305° – 330°

避风屏障

E / ENE (Alísios Havaianos Sopram 100% Offshore) (Offshore)

Trade Wind & Orographic Shelter

海底基质与深度

Shallow Cavernous Coral & Lava Reef with Sand Channel

Cavernous Left Barrel (Pipeline) & Fast Right (Backdoor) over Shallow Reef

SWELL CAPTURE (BLUE) & WIND SHADOW (EMERALD) COMPASS

Swell: 335° (NNW) · Wind: 70° (ENE)

HYDROGRAPHIC REFRACTION, TAKEOFF & EXIT CHANNEL PROFILE

Beach & Reef Bottom Profile

涌浪形态动力 (礁石浪点 (岩石底)): 12秒以上的长周期涌浪在触及海底火山岩架时立即发生折射，将高达 745 kJ 的波浪推力精准汇聚于起乘区域，且浪壁剥落平整。相邻的深水回流水道排水顺畅，避免冲浪者被暗流拖入落浪冲击区。

1. 进出水域黄金法则

Enter and exit through the sandy channel just west toward Pupukea, watching for the lateral rip pulling east toward Off The Wall.

最高满潮: {tide}m: 2.10m•最低干潮: {tide}m: 0.40m

2. 本浪点局部危险

•Extremely shallow reef shelf (3–5 feet deep)
•Second and Third Reef cleanup sets closing out the channel

EXPLORE TECHNICAL DOSSIERS FOR OTHER SPOTS (ALL 19 SPOTS)

19 Monitored Spots

Contreiras / Janelamad

Alagoa (Porto da Cruz)mad

La Jolla / Scrippscal