Benten-jima (Kamoenai Coast)

神恵内海岸弁天島

Posted on Oct 31, 2023
0

Posted on Oct 31, 2023

0 0

8km

Distance

0.5 day(s)

Time

2/5

Remoteness

5/5

Water clarity

4/10

Difficulty

Jun-Sep

Best season

TOPO
Benten-jima Island 弁天島 is a pleasant rocky island, sitting only about five meters from the coast on the southwestern side of Shakotan Peninsula in southwestern Hokkaido. It's the main feature of the Sakazuki swimming beach 盃海水浴場, which is a perfect place to launch sea kayaks or SUPs. Paddling around the island takes about ten minutes, but the coast north of the island is well worth a leisurely out-and-back paddle. There are several secluded coves and shallow reefs, and the main road is always high above the coast, so there's a good feeling of being away from it all, while always having escape options. For the rock-hopping sea kayaker, there are some great spots worth paddling to and spending a few hours playing.

We visited this route on Sep 17, 2023

Last updated Nov 14, 2023

Topomap

Route Map

Need to know details

Location

We’ve called this short section of coast the ‘Kamoenai Coast’, but Benten-jima itself is in Tomari Village, just north of Iwanai Town near Niseko in southwest Hokkaido. This section of coast is at the southern-most end of the Shakotan Peninsula.

Put-in Location: Google Maps

The put-in is at the Sakazuki swimming ‘beach’ 盃海水浴場, in the small settlement of Sakazuki 盃. It’s a curious little cove, with Benten-jima Island just off the beach, a footbridge to the island, and a dedicated sea-swimming pool on the island too. There’s a large car park in front of the shoreline, which costs 500yen per day to park. It’s possible to pitch a tent on the concrete embankment to sleep overnight. Adjacent to the embankment is a public toilet. Wide concrete steps lead down to the shore, making launching kayaks very easy. We put ‘beach’ in parentheses because there is no sandy beach. The concrete steps lead straight into the water.

Take-out Location: Google Maps

The take-out is the same as the put-in.

General notes

Benten-jima and Sakazuki swimming beach are popular among families in the area. The cove is nicely protected from swells. It’s a great place for young kids to enjoy the seaside safely. The main National Highway 229 runs the entire length of the coast, but it’s high enough off the coast not to bother paddlers. High overpasses send traffic high up and over coves along the way, so paddlers will rarely hear traffic noise. Here and there are passageways carved into the reef-like intertidal zones, making for a fun labyrinth for the paddler to explore.

Route description

Launch from the Sakazuki swimming beach, and do a loop of Benten-jima first, before heading north for about 4km to Kamoenai Bay. There are secluded coves along the way to paddle into. Once at Kamoenai Bay, head back the way you came.

Route Timing
Trip time: 3hrs 0min

Transport

Public transport:

There’s a public bus running from Iwanai Bus Terminal 岩内バスターミナル (location) to Moiwa Bus Stop 茂岩バス停 (location), right next to the beach parking area. Google Maps has good timetabling information.

By car: 

There is plenty of parking next to the concrete steps down to the seaside. Parking costs 500yen per vehicle per day.

Physical maps

ELECTRONIC CHARTS
Japanese-language ENCs are available on the Japanese-language new pec smart smartphone app (Android | iPhone). 960yen per month for a subscription.

PRINTED CHARTS

The Otaru-Kamui Misaki 小樽—神威岬 yachting chart covers the Shakotan Peninsula in 1:150,000 scale. It’s available as a physical chart (Y-Chart H-119W – buy online). The JHA/Japan Coast Guard 1:200,000 nautical chart for this area is Mashike Ko to Iwanai Ko (W28 – buy online). A printed 1:50,000 scale bathymetric chart (Kamui Misaki; 6324-3) is available here.

Print: HokkaidoWilds.org 1:25,000 TOPOMAP+
Niseko Backcountry map: Buy on Amazon.co.jp | See companion site for more purchase options
Official Topo Map: Kamoenai (神恵内) – map no. NK-54-20-10-1

NOTE: The official 1/25000 topo map(s) above can be purchased for 350yen from Kinokuniya bookstore next to Sapporo Station or online (in Japanese).

route safety

This section of coast is exposed to the Japan Sea, so it will be affected by westerly weather. Escape options are relatively frequent, however, so if conditions deteriorate, paddlers will be able to access the main highway from a couple of the coves along the way. Paddlers will be unable to access the coast between coves due to high cliffs.

Weather forecast

Windy.com weather forecast for Benten-jima (Kamoenai Coast)

Tide
Tide information for Iwanai

CampSites

Sakazuki Campground (盃野営場)
Location: 43.11419 N / 140.45675 E | Open: Jun-Oct
Closest Onsen: Moiwa Onsen (茂岩温泉) | 500yen | 0.4km from campground
Sakazuki Swimming Beach (盃海水浴場)

Consisting of a large car park and concrete steps down to the water’s edge, it’s possible to camp on the concrete embankment on the seaside of the parking area.

Location: 43.11323 N / 140.45073 E | 500 yen per tent site | Open: Jun-Oct
Closest Onsen: Moiwa Onsen (茂岩温泉) | 500yen | 0.4km from campground
Onsen nearby

Sakazuki Onsen Chokaso 盃温泉ホテル 潮香荘 (location, 600yen) is a 2-minute drive (950m) south of Sakazuki Beach, and has great views across the sea from the outdoor baths. For an onsen even closer to the beach, consider the old Moiwa Onsen 茂岩温泉 (location, 500yen), just a couple minutes’ walk from the beach.

Extra Resources
No extra English resources that we know of. If you know of any, please let us know in the comments.

Guide Options

If you’re keen to explore this area with a guide, we recommend contacting AT Kayaks – they can offer tours in English. If your Japanese is up to scratch, Shakotan Kayaks also offers tours in this area.

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Show Full Route Notes Close Route Notes

Route Trip Notes

The southwestern coast of Shakotan Peninsula had been on my mind for a while. We had paddled most of the rest of Shakotan’s coast, but this somewhat enigmatic southwestern side had been left somewhat untouched. Perhaps it was the main highway running the length of the coast that had reduced its appeal. Perhaps it was that not many other paddlers we knew of paddled this coast. Perhaps it was the great heaving Tomari nuclear powerplant at the southern end of the coast that was putting people off. 

A closer look, however, suggested the main highway ran high above the coast, suspended on large overbridges. Personally, I was very keen to paddle past the nuclear power plant, otherwise secluded from view from the main road by a high headland.

The night before our paddle, we parked up in our campervan at the 24-hr toilets in the parking lot next to Kamoenai Bay. It was a windy night, with gusts rocking the van at times. Things weren’t looking good for an extended paddle from Kamoenai down to a beach just past the Tomari nuclear power plant.

In the morning, the wind was still blowing hard. My alarm went off at 4am, but we decided to sleep in.

At 6am, we finally roused ourselves. Realistically, it was already too late to arrange the shuttle and commit to paddling over 20km down the coast. So, we drove down to the secluded cove at Benten-jima, to see if we could at least put the kayaks in for some skills practice.

By the time we arrived at Benten-jima Island, however, the wind had dropped and it appeared the day was shaping up to be beautifully calm and pleasant. A real change from the windy, cold, somewhat dismal-feeling morning.

To our surprise, there was a number of families with full overnight camping setups looking very at home on the concrete embankment next to the shore.

We wasted no time in getting the kayaks off the van and into the water. We decided to paddle north along the coast to Kamoenai Bay – where we’d parked overnight – and paddle back. A super non-committing paddle that suited our desire for a late-start, easy paddle.

We started off with a quick paddle around Benten-jima Island. It was connected to the mainland by a concrete bride. A young family was playing in the concrete swimming pool on the island.

We then started the leisurely paddle north along the coast. 

Mercifully, the main highway was indeed suspended high above the coast, meaning that apart from the large concrete pillars holding up the road, we didn’t really notice it.

A feature of this section of coast were the low rocky intertidal rocks jutting out into the sea. Some of them formed passageways, so we paddled into all the gaps we could find, to find out if they connected up.

Here and there were deep coves, ending in nicely protected beaches. One in particular caught our attention.

Sheep.

There was a sheep.

Tied to a rope, it watched us paddle into the cove, chewing on its cud.

We pulled up on a small sandy beach beside a large disused concrete landing. I walked up to look at the roped-up sheep, and was started by another sheep, this one not tied up, and extremely friendly.

It walked right up to me and nudged me in the leg, clearly demanding a stratch.

A quick scratch on the head seemed to satisfy the sheep’s desire for interaction, so we took some photos and left them be.

Their owner wasn’t around, so we still don’t know the story behind this large intrusion of concrete and development in this otherwise very nice cove.

We carried on along the coast, dropping in on coves as we went.

We don’t have photos of it, but of all the places we’ve paddled in Hokkaido so far, this section of coast would arguably be the most suited to rock-hopping. There were some fun submerged rocky reefs where the very small swell was breaking over. We didn’t have our helmets with us, so didn’t want to get too frisky, but the area clearly had potential.

Nearing Kamoenai Bay, we paddled into an artificial channel carved into the intertidal zone.

Haidee took the opportunity to practice her rolls.

The paddle back to the put-in at Benten-jima Island was non-eventful…a perfect end to a relaxing Sunday paddling exploration.

Comments | Queries | Reports

Done this route to Benten-jima (Kamoenai Coast), or other waterways nearby? Thinking of doing it? Please post any feedback, reports, or queries here. Thanks!

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Benten-jima (Kamoenai Coast) Difficulty Rating

Category

Grade

Points

Strenuousness

Vertical Gain

D

25

Time ascending

D

0

Technicality

Altitude

D

0

Hazards

D

Navigation

D

Totals

25/100

GRADES range from A (very difficult) to D (easy). Hazards include exposure to avalanche and fall risk. More details here. Rating rubric adapted from Hokkaido Yukiyama Guidebook 北海道雪山ガイド.