Charting the world's finest ocean routes since 2014
About this guide
What does a Norwegian fjord look like at 6 a.m.?
Duff Core Blend is an editorial guide to ocean cruising. Covering routes from the Baltic to the Caribbean, the fjords of Norway to the Greek archipelago, with honest itinerary breakdowns and port-by-port dispatches.
Duff Core Blend started in the autumn of 2014 as a single long-form piece about a 12-night Baltic sailing that Elena Vasiliev took on a whim after a conference in Helsinki. The piece ran to 8,000 words and covered everything from the overnight crossing to Tallinn to the peculiar social geometry of a ship's dining room. A few hundred people read it. Then a few thousand. By the following spring, readers were sending in their own voyage logs, asking for port recommendations, and requesting a breakdown of the Norwegian Hurtigruten coastal route. The site grew from there, one route at a time.
Editor's note
I started keeping a paper log of every sailing in 2014, mostly because I did not trust my memory for the details that matter. The exact time the ship clears the last headland of a fjord, the name of the dock official in Tallinn who pointed me toward the right tram. This guide is an attempt to make those details useful to someone else. Elena.
News & Announcements
News & Announcements
2026-08-24
How to choose between an expedition ship and a small luxury vessel for a polar voyage
Which ship format is actually right for a polar voyage? It is a question that comes up repeatedly among travellers planning their first journey to the Arctic or Antarctic, and it rarely gets a straight answer. Most booking guides gloss over the structural differences between an ice-hardened expedition vessel and a boutique luxury ship, treating the two as interchangeable upgrades on a single spectrum. They are not. The gap between them involves hull ratings, Zodiac capacity, staff-to-passenger ratios, and — crucially — what a traveller is actually prepared to prioritise when the temperature drops below zero and the itinerary pivots without warning. This piece works through those differences in concrete terms, so the choice becomes navigable rather than arbitrary.
The real cost of a Caribbean cruise: what the headline price does not include
A traveller books a seven-night Caribbean cruise for $699 per person, feels genuinely satisfied with the deal, and then receives a final onboard statement for something closer to $1,100 before the flight home. This is not a rare misfortune — it is the standard operating architecture of the cruise industry, refined over decades into a system that keeps the headline number low and recovers the margin through a cascade of mandatory and semi-mandatory charges applied after the booking is confirmed. The gap between the advertised fare and the total paid runs, across major lines operating in the Caribbean, between 30 and 50 percent on a typical seven-night itinerary. Understanding exactly where that gap lives — line by line, category by category — is the only reliable way to plan a budget that does not collapse at the gangway.
Why the Nærøyfjord section of a Norwegian itinerary is not interchangeable with Geirangerfjord
Standing on the aft deck somewhere near Gudvangen, watching the cliff walls close in until the water ahead looks like it simply ends, it becomes obvious that something is happening here that a wider fjord cannot replicate. That narrowing — the Nærøyfjord at its tightest barely 250 metres across — is not a scenic flourish. It is a structural fact with real consequences for how a journey is planned, which vessel can make the transit, and what a traveller actually encounters on the water. Both Nærøyfjord and Geirangerfjord carry UNESCO World Heritage status, both are sold in brochures with near-identical superlatives, and both are genuinely spectacular. The conflation, though, is a planning error that surfaces every season — in missed wildlife windows, wrong ship bookings, and shore excursions that do not deliver what the landscape can actually offer. This piece lays out the practical and experiential differences corridor by corridor, season by season.
"I used the Dubrovnik port guide for a four-hour stop in August. Every timing recommendation was accurate, including the cable car queue estimate."
Martin K.Reader, Hamburg
"The cabin comparison tool saved me from booking an obstructed-view cabin on a ship where the obstruction is a lifeboat davit. That detail is not in the brochure."
Priya S.Reader, London
Selected client feedback. Individual experiences vary and may not be representative.
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Why this guide exists
Route-first thinking
Every itinerary here is built around the sailing itself, not the onboard casino. We cover port sequencing, sea-day pacing, and the difference between a 7-night and a 14-night rhythm.
Cabin-level detail
We break down cabin categories by actual square footage, natural light, and noise exposure. Not by the marketing tier names the lines use.
Port dispatches
Each port entry covers what to do in the first two hours off the gangway, which excursions are worth the surcharge, and which ones you can replicate independently for a fraction of the cost.
8
Ocean regions covered
12
Years of editorial research
60+
Cruise routes documented
200+
Ship classes in the cabin database
Maker
A note from the owner
Founder, Established since 2014
Elena Vasiliev
Elena Vasiliev studied journalism at the University of St. Petersburg and spent six years as a travel correspondent for a regional magazine before launching Duff Core Blend in 2014. Her first long-form cruise piece, a 12-night Baltic sailing report, became the foundation of the guide. She has since sailed routes in the Norwegian fjords, the Greek archipelago, the Canary Islands, and the Canadian Maritimes. She collaborated on a port-city photography project with documentary photographer Arno Lindqvist in 2019, and contributed a chapter on expedition cruising to a travel anthology edited by journalist Marta Ferreira in 2022. She reads ship technical specifications for recreation, keeps a paper log of every sailing she has taken, and is currently working on a long piece about the changing economics of the Adriatic cruise corridor.
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