H36 seaworthiness
I've only put 3200nm on my 05H36, mostly singlehanding in the Gulf of Maine - mostly with winds between 3-30kts and seas no more than 8ft. While it's a comparable number of miles, it's not a lot of abuse compared to an Atlantic crossing. But, the boat is dry as a bone.However, I have experienced a knockdown from the 48kt+ gusts of a thunderstorm that gives me a lot of confidence in her (see link).Obviously, there are limitations to the stock boat, but without knowing how you've equipped yours, it's hard to comment on what you should add.The lifelines are rather low, and clearly, the lack of a bridge deck is an issue for any offshore use. Having had a previous boat's cockpit boarded by a quartering breaker and filled hip-high, I know I'm a bit sensitive on the issue. Nevertheless, keeping the dropboards in and slide closed at all times offshore is not hard to do. I find that just taking the top board out momentarily and stepping over the bottom two is not difficult for me (or my wife - and we're not kids). It quickly becomes habitual.Things like the stock boat's inadequate cabintop grab rails and lack of bottom hold-downs on the companionway steps are easily fixed. The narrow sidedecks and minimal lifelines can be lived with by installing a permanent ss wire jackline from the center of the arch to the mastbase and using the cabintop to go forward (with a short tether). While un-jamming a Furlex in 6ft seas is not pleasant, installing wire lacing on the lifelines makes it a bit less insecure. Temporary jacklines from the stern cleat to the bow cleat on each side are easy to rig.There's a lot of storage space for two people, but it's in big spaces that mandate lots of smaller sealable containers packed into them so they won't slop around. I've not added hold-downs on the lids of the settee lockers, but the contents of mine did stay where they were during the knockdown.The stock UK mainsail is 426sq-ft and only has 2 full battens on the top, with 2 leach battens below. The in-mast furling mainsail is only 384sq-ft, and the thoughts of dealing with a furler jam in heavy conditions I find daunting.I'm much more comfortable with the custom sails I had Doyle make for me from 8.8oz type 52 Dacron, including an all-full-batten, full-roach (490sq-ft) mainsail with 3 reef points. Even triple-reefed, the mainsail shape is excellent. To closehaul less than 28 degrees off the wind does require the use of the lazy sheet as a Barbor-hauler, but the boat does point pretty well with these sails, shoal draft notwithstanding. Knowing I can beat off a lee shore is important to me.The H36 weighs 7tons, and requires a lot of sail area for Force 2 conditions. Obviously, that area will get you in a lot of trouble in Force 6. I need both capabilities in the Gulf of Maine between April and November. A mainsail downhaul led back to the cockpit is a nice compliment to lazy jacks in heavy weather. Having 3 reef lines and the vang led aft does require more spinlocks on the cabintop, but they're not difficult to install. Hunter's fabric cabin liner is cleverly designed to allow easy access to the cabin roof.(I ordered the boat with ST40 winchws on the cabintop, just like the coaming winches. Not only do they give my wife more mechanical advantage, but a single set of spares covers all winches.)Your conditions may differ, but whatever they are, I'd suggest that you above all make sure you're confident in the durability and usability of your sails (and running rigging) for the conditions you expect to prepare for. 38gal of diesel is only 3 days worth, and you do only have a single primary fuel filter in a pretty clumsy location. (Matching ground tackle to expected use also requires a little thought. I've found a 35lb delta and 275ft of 5/16 HT chain quite adequate, with a fortress with a mixed rode for backup/kedge. However, I've never had to anchor for anything like a Hurricane.)Fair winds.