Captain

Magnus Nilsson

Key West, United States

25+ reviews

Ride in comfort aboard the largest charter boat at historic charter boat row! Captain Magnus is born to fish and knows the Key West waters like the back of his hand. MEET THE CREW: Captain Magnus is the Owner/Operator of THE ULTRA GRAND SLAM FIVE (((5))) STAR SPORT FISHING CHARTERS! Known as 'The Key West Fishing Viking' Capt. Magnus catches the Big Ones running out of the World Famous Charter Boat Row. THE ULTRA GRAND SLAM is a Fully Equipped, Deep Sea, Sports Fishing Cruiser and, is one of the few with Air Conditioning!!! His First Mate, Ross has been making it happen for over 20 years and has caught 3,600 Billfish to date!!! Together with Captain Magnus, they are the hardest working crew in Key West. Be there when they make it #3,601!!!

Charter

Ultra Grand Slam Sport Fishing

Key West

Instant Confirmation

Trips from

US $950

Rating

4.6

38 reviews

4.4

Boat & Equipment

4.8

Captain & Crew

4.7

Fishing Experience

Anglers' gallery (31)

What anglers say

91%

Recommend this charter

80%

Caught fish

All reviews (38)

Showing 1 – 5 of 38 reviews

Patrick Clark
Kansas, US
Member since 2025
5.0
Verified
Excellent Experience
Half Day Deep Sea Sportfishing on March 20, 2026 • 3 adults
Unbelievable experience. The guys worked hard to catch great fish. Snagged barracuda and king fish. Took fillets downtown to local restaurants for catch and cook that were unreal.
Aaron Pitterman
Repeat angler
California, US
Member since 2020
4 trips
5.0
Verified
Great crew!
3/4 Day – Deep Sea Sportfishing on February 21, 2026 • 3 adults
We had a great trip. Amazing crew.
Reported catch:
Response from Captain
February 22, 2026
Thank you Aaron, looking forward to next time.
Russell Mcallister
Repeat angler
Missouri, US
Member since 2025
2 trips
4.3
Verified
July fishing trip
3/4 Day – Deep Sea Sportfishing on July 27, 2026 • 5 adults
Reported catch:
Chris Brigham
Massachusetts, US
Member since 2025
The captain canceled
Trip was supposed to happen on December 30, 2025
The charter operator canceled 1 days prior to the trip date. This is an automated posting.
Michael Mcdorman
Indiana, US
Member since 2022
5.0
Verified
Full day trip
Full Day – Deep Sea Sportfishing on August 10, 2022 • 4 adults
We had a great time and caught a lot of Dolphin. The captain and first mate were awsome . If you want the best boat and crew this is it no need to look any further.
Response from Captain
August 17, 2022
Thank you Michael, it was indeed great fishing with you guys

Real catches shared by our community

Ultra Grand Slam Sport FishingKey West, FL
Patrick C.7 months ago
Ultra Grand Slam Sport FishingKey West, FL
Kenneth R.3 years ago
Ultra Grand Slam Sport FishingKey West, FL
Rodney J.4 years ago
Ultra Grand Slam Sport FishingKey West, FL
Michael M.4 years ago
Ultra Grand Slam Sport FishingKey West, FL
Robert Y.4 years ago
Ultra Grand Slam Sport FishingKey West, FL
Marius S.4 years ago
Ultra Grand Slam Sport FishingKey West, FL
Mark P.5 years ago
Ultra Grand Slam Sport FishingKey West, FL
Amy S.5 years ago
Ultra Grand Slam Sport FishingKey West, FL
Richard .5 years ago
Ultra Grand Slam Sport FishingKey West, FL
Todd B.5 years ago

What's biting with Ultra Grand Slam Sport Fishing in Key West

Late fall sees the reefs come alive. Large numbers of baitfish attract delicacies such as Yellowtail Snappers, Groupers, and Mutton Snappers, which then arrive in boats and on the dinner table.