Ride in comfort aboard one of the largest charter boats at charter boat row!
Ultra Grand Slam Sport Fishing Charters and Captain Magnus Nilsson invite you down to Key West for an adventure of a lifetime. The company specializes in inshore, offshore, wrecks, and reef fishing trips that are great for seasoned enthusiasts and record-seekers alike.
Captain Magnus loves catching fish and having a great time on the water. The first mate will cater to your every need. We customize our trips to maximize your pleasure.
Whether you want to watch your friend reeling in the biggest catch in their life or you wish to test your angling skills and make a great catch possible, there is a trip for you. You will be able to enjoy the view, spot any action going on beneath the surface, and take in all the beauty of the surrounding waters from a flybridge.
Your day out will take you fishing for anything from Mutton Snapper and Kingfish to Black Grouper, Barracuda, Amberjack, Sharks, and Marlin. You will be trolling and live bait fishing for all big game species. Even if the weather doesn’t cooperate, Capt. Magnus and his crew will take you to the sheltered waters, where you will be able to try your hand at Jacks, Shark, and Barracuda.
The ‘Ultra Grand Slam’ is a Concord AMF Brunswick with 47’ of excellence. She has been uphauled in 2018 and comes powered by a pair of 450 HP Cummins engines. The Ultra Grand Slam is rigged with latest electronics, technologies, and professional accessories.
All trips come with the use of high-quality Penn International and Shimano tackle, as well as lures. Live bait will be caught on the trip.
Rating summary
Photos & videos by reviewers (30)
Angler rating
Anglers claimed
Good experience
92%
Appropriate for children
100%
Friendly captain
100%
Satisfied with the boat
100%
Recommend this charter
82%
Caught fish
78%
Boynton Beach, FL
Aug 10, 2022
Full Day – Deep Sea Sportfishing
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.
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...
Zephyrhills, FL
Aug 3, 2021
3/4 Day – Deep Sea Sportfishing
Both were fantastic!! The fish weren’t biting, but that’s not their fault. The air conditioner didn’t work, but we survived. The boat was clean and water was provided. The only thing we wish is that we could have been a little more involved in the fishing. At times, it felt like we were watching our dinner being caught instead of catching it. Alan was very fun and Captain Magnus was informative on the ride back pointing out local points of interest and just being generally cordial. All in all, great trip and definitely recommend!
Both were fantastic!! The fish weren’t biting, but that’s not their fault. The air conditioner didn’t work, but we survived. The...
Oshkosh, WI
Jan 15, 2023
3/4 Day – Deep Sea Sportfishing
Awesome time
Awesome time
Loudon, Tennessee
Jun 23, 2021
Half Day Deep Sea Sportfishing
Awesome time. Capt. Magnus was great, and Travis worked hard the entire trip. Travis kept us laughing, and Capt Magnus piloted the ship right where the fish were. Couldn't ask for a better time. I would definitely book again, however call them direct, as using Fishingbooker.com can create problems.
Awesome time. Capt. Magnus was great, and Travis worked hard the entire trip. Travis kept us laughing, and Capt Magnus piloted...
Tampa, Florida
Jan 13, 2019
3/4 Day – Deep Sea Sportfishing
We had a wonderful time on our 6 hour trip on the Ultra Grand Slam Sport Fishing Boat! From the moment we arrived at the dock we were taken care of by Ross and Capt Craig. Everything was made easy for us, and anything we needed was provided. Captain Craig pointed out interesting sites while we were on our way out of the dock area and explained what where we were going and unique things about fishing in the Keys. We caught our limit of King Mackerel and some great Black Fin Tuna - and had our fish for dinner that night! I have chartered fishing boats up and down the east coast as well in Key West and this was by far the best experience we have had. Booking with Captain Craig is the easy button for a good time! Thanks again Captain Craig and Ross Baker!
We had a wonderful time on our 6 hour trip on the Ultra Grand Slam Sport Fishing Boat! From the moment we arrived at the dock...
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Rating summary
Photos & videos by reviewers (30)
Angler rating
Anglers claimed
Good experience
92%
Appropriate for children
100%
Friendly captain
100%
Satisfied with the boat
100%
Recommend this charter
82%
Caught fish
78%
Boynton Beach, FL
Experience:
Boat
Crew
Overall
Full Day – Deep Sea Sportfishing on August 10, 2022
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.
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.
Zephyrhills, FL
Experience:
Boat
Crew
Overall
3/4 Day – Deep Sea Sportfishing on August 3, 2021
Both were fantastic!! The fish weren’t biting, but that’s not their fault. The air conditioner didn’t work, but we survived. The boat was clean and water was provided. The only thing we wish is that we could have been a little more involved in the fishing. At times, it felt like we were watching our dinner being caught instead of catching it. Alan was very fun and Captain Magnus was informative on the ride back pointing out local points of interest and just being generally cordial. All in all, great trip and definitely recommend!
Both were fantastic!! The fish weren’t biting, but that’s not their fault. The air conditioner didn’t work, but we survived. The boat was clean and water was provided. The only thing we wish is that we could have been a little more involved in the fishing. At times, it felt like we were watching our dinner being caught instead of catching it. Alan was very fun and Captain Magnus was informative on the ride back pointing out local points of interest and just being generally cordial. All in all,...
Oshkosh, WI
Experience:
Boat
Crew
Overall
3/4 Day – Deep Sea Sportfishing on January 15, 2023
Awesome time
Awesome time
Loudon, Tennessee
Experience:
Boat
Crew
Overall
Half Day Deep Sea Sportfishing on June 23, 2021
Awesome time. Capt. Magnus was great, and Travis worked hard the entire trip. Travis kept us laughing, and Capt Magnus piloted the ship right where the fish were. Couldn't ask for a better time. I would definitely book again, however call them direct, as using Fishingbooker.com can create problems.
Awesome time. Capt. Magnus was great, and Travis worked hard the entire trip. Travis kept us laughing, and Capt Magnus piloted the ship right where the fish were. Couldn't ask for a better time. I would definitely book again, however call them direct, as using Fishingbooker.com can create problems.
Tampa, Florida
Experience:
Boat
Crew
Overall
3/4 Day – Deep Sea Sportfishing on January 13, 2019
We had a wonderful time on our 6 hour trip on the Ultra Grand Slam Sport Fishing Boat! From the moment we arrived at the dock we were taken care of by Ross and Capt Craig. Everything was made easy for us, and anything we needed was provided. Captain Craig pointed out interesting sites while we were on our way out of the dock area and explained what where we were going and unique things about fishing in the Keys. We caught our limit of King Mackerel and some great Black Fin Tuna - and had our fish for dinner that night! I have chartered fishing boats up and down the east coast as well in Key West and this was by far the best experience we have had. Booking with Captain Craig is the easy button for a good time! Thanks again Captain Craig and Ross Baker!
We had a wonderful time on our 6 hour trip on the Ultra Grand Slam Sport Fishing Boat! From the moment we arrived at the dock we were taken care of by Ross and Capt Craig. Everything was made easy for us, and anything we needed was provided. Captain Craig pointed out interesting sites while we were on our way out of the dock area and explained what where we were going and unique things about fishing in the Keys. We caught our limit of King Mackerel and some great Black Fin Tuna - and had...